Lady Gaga has finally returned to the stage after undergoing hip surgery in February.

The "Poker Face" singer took the stage for an impromptu appearance at the Gramercy Park Hotel's Rose Bar Thursday night, joining her friend Brian Newman, a jazz trumpeter, during his performance. Gaga sang George Gershwin's "Someone To Watch Over Me."

"Thanks to the 1&only @ladygaga for coming out to @GPHhotel tonight an singing a song!!" Newman tweeted afterward.

The unscheduled performance was the singer's first since cancelling her tour to have a painful hip injury repaired. She spent weeks in a whee...

Lady Gaga's team is urging fans to send in art inspired by the pop superstar in a bid to boost her recovery from hip surgery.

The singer underwent an operation on 20 February (13) to treat an injury which prompted her to cancel the remaining dates on her Born This Way Ball world tour.

The Poker Face hitmaker is still taking it easy in a bid to ensure she doesn't hamper her healing by returning to live performances too early, and now her team are asking devotees to lift her mood by creating artworks in her honour.

A post on the star's website reads, "Show Mother Monster just how much you ...

Celebrity investors have the ability to bring notoriety to an item or cause, as well as a large budget to invest in its success. Because of this, celebrities are often far more successful than people with small budgets and no fame to contribute to their investment's success. Here are some of the stars who have scored big on investments.

1. Lady Gaga: Monster Investor

Perhaps aware that her special brand of fame would be short-lived, Lady Gaga began to make investments immediately after becoming famous. The FarmVille extension called GagaVille was her first stab at becoming an investor. He...

Ke$ha showed off a considerable amount of leg at the 2013 Billboard Music Awards on May 19. The singer is the latest star to show off some "side-butt" -- a seemingly new trend among designers and the stars wearing their dresses. Let's just hope the guys don't follow suit.

Gwyneth Paltrow titillated in a sheer paneled dress at the "Iron Man 3" premiere earlier this month, revealing that she wasn't wearing any underwear beneath her Antonio Berardi gown. Everyone was talking about the dress, which showed off quite a bit of her rear end.

Kristen Stewart revealed quite a bit of skin at the "Th...

Every year when April 20 rolls around people across the U.S. celebrate an unofficial holiday: weed day.

Stoners everywhere recognize 4:20 as being the time of day to light up, and when the date is 4/20 it's time to kick back, light up and smoke all day -- especially at 4:20. If you're into that kind of thing, of course.

Now that several stats have legalized marijuana to various degrees plenty of folks from sea to shining sea will be lighting up this year, some even in public. Colorado, which has the loosest regulations on pot, sees thousands gather in downtown Denver -- aka the Mile High ...

Pop superstar Lady Gaga rejected a $1 million offer to give presidential candidate Mitt Romney a big boost in the run-up to the election last year by performing at the Republican National Convention.

Court documents unveiled this week reveal the Poker Face hit-maker had been approached by organizers of the Republican Party's pre-election gathering to hit the stage at the Tampa, Florida event, even though she's one of the most outspoken gay rights advocates and a fan of Romney's Democratic rival Barack Obama.

Representatives at the American Action Network, the group behind the convention...

Which celebrities would probably make horrible parents?

Here's our latest list of stars who aren't exactly good role models for kids now, so having their own probably isn't a good idea.

Some made the list based on their appearances (scary), trouble with the law, inability to keep their bedroom door closed, mental issues or just being too into themselves.

Our first list included such *ahem* stars as Snooki, who had just given birth to her first child, Lindsay Lohan, and two stars who are now expecting their first child together -- Kim Kardashian and Kanye West.

Check out our latest batch...

Lady Gaga is cruising around in style while she recovers from hip surgery after commissioning a designer to create a gold wheelchair for her.

The Poker Face hit-maker scrapped the U.S. leg of her Born This Way Ball tour last month after she was diagnosed with synovitis, a severe inflammation of the joints, and she underwent an operation to treat the condition on February 20th.

Since then Gaga has been ordered to limit her physical activity, and now she has a sweet new way of getting around - a 24-karat gold-plated wheelchair, which comes with a reclining back.

Jewelry designer Ken Bor...

New dad Nick Lachey is set to release an album of lullabies on March 13, and the cover image for the new album looks like one of those stock photos that comes with a new picture frame.

The 98 Degrees singer's "A Father's Lullaby," co-wrote four of the songs on the album, which includes covers of such standards as "You Are My Sunshine," "Hush, Little Baby" and "When You Wish Upon A Star."

"When I first learned that I was going to be a father, I was inspired to create a special tribute to my son. Music has always been an incredibly significant part of my life and a meaningful way in which I...

Pop superstar Lady Gaga has checked into the hospital to undergo hip surgery.

The Poker Face hit-maker scrapped several shows on her Born This Way Ball tour in the U.S. earlier this month after being diagnosed with synovitis, a severe inflammation of the joints.

She subsequently cancelled the rest of the trek last Wednesday after being told she needed an operation to treat the injured hip, and now Gaga is going under the knife in a bid to address the problem.

In a post on her Twitter.com page on Wednesday, she writes, "Going in for surgery now. Thank you so much for sending me love an...

Impending hip surgery has forced Lady Gaga to cancel the remainder of her world tour. On Tuesday the singer scrapped several shows on her "Born This Way Ball" trek after being diagnosed with synovitis, a severe inflammation of the joints.
 
Gaga said she was "completely devastated" about the situation, and her desire to return to the stage has been quelled. Doctors told the star she will need an operation to treat the injured hip, forcing her to cancel the rest of her tour, which runs until the end of March.
 
Live Nation issued the following statement: "Live Nation Global Touring has confi...

A health issue has left Lady Gaga unable to walk, so the pop star has been forced to postpone a series of concerts on her North American tour.

The singer was scheduled to take her "Born This Way Ball" to Chicago, Illinois; Detroit, Michigan; and Hamilton, Ontario this week, but due to a case of synovitis (severe inflammation of joints ) her doctor has ordered her to cancel several shows in order to rest up and recover.

She wrote on Facebook: "There's an unfortunate announcement coming out right now, concerning myself and the Born This Way Ball. Im so sorry. I barely know what to say. I'v...

Kim Kardashian showed a little nipple in Toronto recently while celebrating her new jewelry line, but see-through clothing isn’t always sheer genius. It’s a sexy way to dress, but if you’re not careful you can show just a little too much.

Carly Rae Jepsen (above) showed up to the 2013 Billboard Music Awards wearing a very revealing dress, and so did Jennifer Lopez and "Once Upon a Time" stare Jennifer Morrison.

Remember when Beyonce flashed her assets in a see-through Givenchy couture gown at the Met Gala in New York City? Va va voom! And former Destiny's Child bandmate Kelly Rowland opte...

A former personal assistant is suing Lady Gaga and her tour company, claiming she is owed $380,000 for 7,168 hours of unpaid overtime during the 2010 "Monster Ball" trek.

Jennifer O'Neill, who worked for the singer for 13 months, gave an official testimony and during her deposition she claimed she was never given her own hotel room and was forced to sleep in the same bed as her boss.

According to the New York Post, O'Neill said: "I was by her side virtually 24 hours a day, seven days a week. That includes sleeping in the same bed with her. Because she did not sleep alone... Unlike anybody...

Lady Gaga shocked a group of lawyers by launching into a foul-mouthed rant about her former personal assistant during a sworn deposition for an ongoing court case.

The Poker Face hit-maker is locked in a legal battle with former employee Jennifer O'Neill, who claims she is owed overtime payments from her time on tour with the singer.

O'Neill, who spent 13 months working as Gaga's aide, filed suit against bosses of the singer's Mermaid Touring Company claiming she is owed $380,000 for 7,168 hours of overtime.

Gaga was recently called to give a video-taped deposition in New York as part...

Justin Bieber has overtaken fellow pop star Lady Gaga to become the most popular celebrity on Twitter.com.

The Poker Face hit-maker broke a number of records as she clocked up millions of followers on the social networking website, but the teenage singer has always been hot on her heels and he has now officially overtaken Gaga to rack up the most online followers.

Both stars have been hovering around the 33 million mark, but Bieber overtook his rival by several thousand on Monday night.

Gaga acknowledged Bieber's growing Twitter.com fan base earlier this month, writing in a message to...

Lady Gaga got personal with one of her Little Monsters last month when a 22-year-old fan met the singer at her Cape Town concert on December 3rd and got the star's autograph. On her nipples.

South Africa native Jana Babez met Gaga by getting her attention with pink dreadlocks and a headdress made of flowers, and when the singer spotted Jana she pulled her up on stage. Jana then flashed her breasts and was invited backstage after the show to meet her idol.

"Gaga picked me out from the audience calling me a 'pink princess'... When I saw Gaga I flashed my boobs at her, and at 55,000 audience...

Lady Gaga once called Charlie Sheen and asked him to appear in one of her music videos. 

The former Two and a Half Men star was put in contact with the pop superstar when they were both cast in new movie Machete Kills, and Sheen reveals the singer called him up with an interesting offer. 

The actor claims Gaga wanted him to feature in a music video set in a strip club and he accepted her offer, but the Poker Face hit maker never moved forward with the plans. 

Sheen tells TheDailyBeast.com, "We didn't share any scenes (in Machete Kills) but I actually spoke to her on the phone. She wanted...

Sharon Osbourne has taken aim at Lady Gaga and branded her a "bully" after the singer criticized her daughter Kelly in an online letter on Thursday.

The "Poker Face" hit-maker urged the reality TV star to "set a standard of respect, compassion, and love" and "take responsibility and accountability" for her catty comments on style series Fashion Police.

The letter, posted on Gaga's LittleMonsters.com blog, came after Kelly revealed she had been cyber bullied by the hit-maker's fans for harsh comments she made about the pop star's weight.

Gaga wrote, "I have empathy for you Kelly, but I...

Lady Gaga gave up smoking marijuana while recording her new album "ARTPOP".

The "Poker Face" hitmaker has been open about her use of the drug in the past, even declaring her love for cannabis as she lit a cigarette onstage in the Netherlands in September.

However, Gaga chose to shun pop as she worked on her upcoming release.

In an online chat on her Little Monsters social networking site, she revealed, "No weed on ARTPOP. No. Weed in the bathtub though. Hahaha."

The singer also told fans to expect edgy music on her new record, adding: "ARTPOP is very risky. If you're not taking a risk y...

E.L. James' 2011 novel "Fifty Shades of Grey" skyrocketed to the top of the bestseller list in 2012, inspiring millions of women (and men) to pick up a copy and read about the passionate, bondage-filled affairs of Christian Grey and Anastasia Steele.

The book took on formerly taboo subjects and had everyone talking this year, even the celebrities.

Stars were spotted at the beach or out-and-about carrying copies of the book, Oprah called it her "guilty pleasure" (apologies if you just threw up in your mouth a little bit), and Megan Fox read the book to a dolphin in a parody commercial for ...

2012 saw its fair share of celebrities showing off their sexy curves in bikinis at the beach (and one-piece suits as well), but which stars were the sexiest of all?

Some were snapped by the paps, while others discovered the magic of Instagram and shared photos nearly every time they went, minimally clothed for some sun, sand & surf.

Stars like Kim Kardashian and Rihanna seemed to post their sexy shots the most, while supermodel Bar Refaeli shared lots of photos with her fans.

Britney Spears got her bod back to its rockin' old form; while Stephanie Seymour, 44, and Daisy Fuentes, 46, prov...

Lady Gaga wants her fans to seek help - if they need it. And she's making it easier for them by providing counselling services during her concert tour.

The singer will resume her "Born This Way Ball" concerts on January 11 in Vancouver, Canada, and she wants to help her fans, known as Little Monsters, who are experiencing personal problems.

In a series of posts on her Twitter, Gaga writes, "For those wondering about the 'counseling' at the BTWBall BornBrave pre-show, it will be a fun tailgating experience for monsters (fans) to unite.

"At the BornBrave Bus you have access to professional...

Lady Gaga's new perfume has proved popular in Britain after it was named the country's best-selling celebrity fragrance this Christmas.

The "Poker Face" singer released The Fame this year and it has since been hailed Britain's most popular perfume in the celebrity scent market as sales rocketed in the run-up to the festive season.

The Fame has been named the U.K.'s best-selling celebrity scent by bosses of British chain The Fragrance Shop, clocking up 19 per cent of sales in the country's high street stores.

New James Bond fragrance 007 came in second, ahead of Britney Spears' Midnight F...

When the current baktun of the Mayan calendar comes to a close on December 21, 2012, many prophecies say the world will end.

Mind you, this prophecy comes from a race of people who couldn't predict their own civilization's end, so how credible are they in predicting the end of the world in our time?

The sun will rise and life will probably go on as usual tomorrow, but for now we've come up with a list of celebrities that -- if the world does end -- you won't miss.

Like Kim Kardashian, above.

Honey Boo Boo

Lady Gaga

Kanye West

Madonna

Ke$ha

Cast of Jer...

PETA is none too happy about Lady Gaga's recent chopping sprees involving new fur outfits. The pop star took advantage of her recent trip to Russia to pick up some new outfits featuring animal fur.

According to GossipCop, she purchased a Russian sable coat worth about $210,000, as well as a silver fox coat valued around $19,600 at the Helen Yarmak store in Moscow.

The animal rights group wrote, "Out of place, out of time, and possibly out of her mind: While the country focuses on rejecting violence and we are deep into the season of peace, giving, and kindness, Gaga is busy decking hersel...

Lady Gaga posted a photo of herself with The Rolling Stones Saturday night after helping the band wrap up their fifth and final '50 and Counting' show in New Jersey. Gaga joined the legendary rockers for a rendition of their classic "Gimme Shelter".

The band was also joined on stage by Bruce Springsteen, who joined the band for their hit "Tumbling Dice". Stones frontman Mick Jagger joked that Springsteen -- a New Jersey native -- had "walked to the show".

It was a star-studded night as John Mayer joined the band for the second time this week. Gary Clark Jr., The Black Keys and former Ston...

You can't go one week without hearing a ridiculous story involving some of your favorite celebrities. Thankfully, the Starpulse Rumor Patrol is here to sort out what's real and what's fake.

Jessica Alba Pregnant With Third Child: "Just a little over a year after giving birth to her second baby, Haven Garner, the glowing actress is confiding to friends that she's expecting ANOTHER bundle of joy," claims the National Enquirer. "She knows she’ll have her hands full chasing after three kids while balancing her acting career and running a new company, but she just can’t wait to be a mom again."...

A Michael Jackson auction raised a staggering $5 million dollars for charity - and Lady Gaga was a big spender.

Items ranging from the jacket Jackson wore on the cover of his Bad album to his famous crystal-encrusted gloves went under the hammer. The jacket sold for $250,000 and the gloves hit $100,000 a piece.

Pop star Lady Gaga was the high bidder on 55 items. She tweeted, "The 55 pieces I collected today will be archived & expertly cared for in the spirit & love of Michael Jackson, his bravery, & fans worldwide."

Some proceeds from the auction will be given to several charities, such ...

Lady Gaga is auctioning off the chance to spend a day behind-the-scenes of her North American tour to raise money for charity.

The Poker Face hit-maker will invite the lucky winner and one guest to experience 24 hours on the road with her when she takes her Born This Way Ball shows across the country next year.

The highest bidder will be granted a personal meet-and-greet session with Lady Gaga, as well as a photo opportunity backstage and a goodie bag.

They will also be able to sit in on band rehearsals, explore each department of the tour and later enjoy the evening's concert from a ...