Justin Bieber has some serious ground rules for guests who show up to his house parties -- shut up or face a $5 million lawsuit. The singer makes all guests signe a waiver before entering his home, promising to keep quiet about what goes on and not to share any photos, videos, sounds or details on any social media. Oddly enough, he's not the first star to make his pals sign a gag order, the custom has been around amongst celebrities for a while. (story)

Miranda Kerr found herself topless on the set of her photo shoot for her Kora Organics line after a gust of wind blew the top of her dress down, exposing her breasts. The supermodel, who's posed for plenty of topless photos in the past, shrugged it off and continued on with her shoot. She also posted a photo on her Instagram page from a recent shoot for Vogue Italia magazine, and it appears that she's topless in that photo as well. She's also showed skin for that magazine, leaving one breast exposed for a 2010 issue in which her entire pictorial was shot in 3D. Glasses not included. (story)

Jennifer Aniston filmed a short skit for her co-hosting gig on "The Ellen DeGeneres Show" on Wednesday, getting a couple of her former "Friends" co-stars back together for a little reunion. Things didn't go too well for the stars of the hit show though, it seems they've fallen out of touch with each other and Jen isn't in the loop anymore. (story)

The trailer for Aniston's new film, "We're The Millers" was also released on Wednesday, and with a cast that includes Jason Sudeikis and Ed Helms, this one's destined to be another comedy classic like "Horrible Bosses." The film centers on Sudeikis's character having to go to Mexico to pick up a small amount of marijuana from a drug cartel. He comes up with a plan to use a fake family to make things look like a harmless family vacation across the border. Jen plays a stripper in the film and the trailer features her showing off her moves. (trailer)

Speaking of marijuana, Aniston's ex, Brad Pitt, has opened up about his life in the latest issue of Esquire magazine, saying he's the happiest he's ever been. He also said that during his marriage to the actress he was on drugs. Well, mostly just pot, but now that he's moved on and has six kids he feels he's found his calling. "I just haven't known life to be any happier," the 49-year-old told the magazine. Sorry Jen. (story)

Rihanna is no stranger to flashing some skin on her Instagram page, and this time she's got a pair of racy photos: one where she's topless and on a chair and another that shows a close-up of her derriere in tiny denim thong with a pink one underneath. Sexy? Absolutely. (story)

Sharon Stone is 55-years-old and looking absolutely fabulous! The star showed off some major cleavage at Cannes on Tuesday for the premiere of HBO's Liberace biopic, "Behind The Candelabra." (story)

Irina Shayk got daring at the Cannes Film Festival on Wednesday. The Russian supermodel wore a very revealing dress, exposing her black thong, lots of cleavage, and her fantastic curves. She was there for the "All Is Lost" premiere. (story)

Alice Eve's underwear scene in "Star Trek Into Darkness" quickly became controversial for its "gratuitous" inclusion in the film for no apparent reason other than to show off her fantastic body. Now, Trek producer Damon Lindelof has apologized for the inclusion, saying the reason it's in there is a "MYSTERY." (story)