The new year began with wedding bells for many couples including singer Shania Twain, who married her fiance Frederic Thiebaud in Puerto Rico on New Year's Day, while country star Kellie Pickler and actress Valerie Bertinelli also walked down the aisle on January 1.
The new year brought baby news for a number of celebrity couples - Orlando Bloom and his wife Miranda Kerr became first-time parents with the birth of their son Flynn. Penelope Cruz and Javier Bardem also welcomed a son, and Owen Wilson became a father just days after he announced his girlfriend's pregnancy. Nicole Kidman also hit headlines when she and her husband Keith Urban revealed they welcomed a daughter called Faith via a surrogate mother over the holidays.
There was also pregnancy news for actress Kate Hudson, who announced she was expecting a baby with Muse rocker Matt Bellamy, as well as Marion Cotillard, Jewel, Selma Blair and Victoria Beckham, who confirmed she was pregnant with her fourth child.
However, the first few weeks of 2011 also brought a slew of celebrity splits - Keira Knightley ended her longtime romance with actor Rupert Friend, Shakira parted ways with Antonio de la Rua, her boyfriend of more than 10 years, and Mila Kunis and Macaulay Culkin separated after eight years together.
Many stars saw in the new year by addressing their personal problems, and a number of famous faces went in and out of rehab in the first few weeks of 2011. Lindsay Lohan and Demi Lovato both ended long treatment stints in January, while David Arquette, Backstreet Boys star AJ Mclean and his bandmate Nick Carter's younger brother Aaron all enrolled in programs. Troubled actor Charlie Sheen also admitted himself to a clinic just weeks after he was hospitalized to treat a hernia, and he later admitted he turned to booze to blot out the pain of the medical condition. Sheen's rehab stint forced TV bosses to shut down production on his show Two And A Half Men.
Another colorful character to hit the headlines in January was British funnyman Ricky Gervais, who managed to cause controversy during his stint as Golden Globes host. The comedian was condemned by organizers for poking fun at celebrity guests including Robert Downey Jr., Johnny Depp and Tom Hanks during the glitzy awards ceremony.
The month held good news for veteran actor Michael Douglas as he was given the all-clear after a gruelling battle with throat cancer. His wife Catherine Zeta-Jones subsequently admitted she cried tears of joy when doctors told the couple the actor had beaten the disease. Poison rocker Bret Michaels also overcame a health crisis after undergoing successful surgery to close a hole in his heart.
January also saw the loss of a number of great stars including Oscar-winning James Bond theme composer John Barry, and Scottish musician Gerry Rafferty, who passed away after suffering liver failure. The world of Hollywood was again plunged into mourning following the death of British actor Pete Postlethwaite, who died at the age of 64.