It didn't come as much of a surprise when Charlie Sheen announced his divorce from second wife Brooke Mueller in November.
After all, Sheen, the "Two and Half Men" star, had been mostly estranged from his wife since he allegedly assaulted her last Christmas.
Just days before filing the divorce petition, Sheen was briefly hospitalized after New York police reported finding him "emotionally disturbed" in a hotel room. The room was reportedly trashed after Sheen spent a wild night with a porn star -- harkening back to the actor's bachelor days.
In October, singer Christina Aguilera, 29, announced she was ending her five-year marriage to music executive Jordan Bratman.
"When you're unhappy in your marriage, your children are the ones who suffer," she said. "That's the last thing I wanted for my son."
Aguilera seems to be finding comfort with production assistant Matt Rutler, whom she met on the set of her first film "Burlesque," She has already introduced him to her 2-year-old son, Max.
Courteney Cox and David Arquette
Last October will be remembered as a busy month for breakups. That month, Cox and her husband, actor David Arquette, also called it quits after 11 years of marriage.
Arquette, 39, seemed to be taking it harder. After sharing revealing details about his relationship with Cox, including that they weren't having sex, he told Howard Stern that he was having a nervous breakdown.
Cox, 46, meanwhile, was said to be having a more-than-professional relationship with Brian Van Holt, 40, her co-star on her ABC comedy "Cougar Town."
There was also plenty of good news at the end of last year -- and there looks to be several celebrity weddings to look forward to this year.
Oscar-winning actress Reese Witherspoon has rebounded after her split from actor Jake Gyllenhaal.
She's engaged to Hollywood agent Jim Toth, 44, and the two are "extremely happy," Witherspoon's representatives told Us Weekly magazine on Dec. 28, 2010.
The pair began dating early this year after Witherspoon's split from Gyllenhaal. This will be the second marriage for the actress. She and actor Ryan Phillippe divorced in 2008 after seven years as a couple. They have two kids together, Ava and Deacon.
Not only is Natalie Portman engaged to choreographer Benjamin Millepied, she is expecting her first child, her rep confirmed to ABC News.
Portman, 29, and Millepied, 32, met during the production of "Black Swan." Millepied, a principal dancer in the New York City Ballet, choreographed the film, which has earned Portman nominations for Golden Globe and Screen Actors Guild awards.
The notoriously private Portman has been linked to Millepied, a classically trained ballet dancer who was born in France, since early this year, when gossip sites began reporting that the pair started quietly dating last fall.
LeAnn Rimes and Eddie Cibrian
Two days after Christmas, multi-Grammy award-winning singer LeAnn Rimes and actor Eddie Cibrian announced their engagement.
"Thank you for all your well wishes!! We are extremely excited and look forward to a beautiful future. It's been an incredible last few days, I was shocked!!! We are blessed, our families are so happy and our lives are filled with love," Rimes wrote on her Twitter page.