Lauren Conrad & Kyle Howard
After three solid, drama-less years of coupling up, the former reality starlet amicably parted ways with the actor.
George Clooney & Elisabetta Canalis
One of the world's most eligible bachelors is back on the market after he and his girlfriend of two years split up. "We are not together anymore," the duo said in a joint statement. "It's very difficult and very personal and we hope everyone can respect our privacy."
Jason Reitman & Michelle Lee
The Up in the Air director's marriage sadly crashed and burned after he and his wife called it quits. The two married back in 2004 and have one daughter.
Hugh Hefner & Crystal Harris
Well, at least the bride-to-be made up her mind to end things before tying the knot. Which is exactly what she did...five days before the big day! While the Playboy founder was probably left with a bit of a broken heart, it looks like it's healing quickly.
Pippa Middleton & Alex Loudon
While it's unclear as to what exactly caused the breakup between Kate Middleton's kid sister and the former pro cricket player, we do know she has been spending a lot of time with another ex, George Percy. Hmmm.
Jack White & Karen Elson
We always knew the former White Stripes frontman was creative. Sure enough, when he and his wife opted to end their marriage of six years, they announced it while also sending out invitations for a divorce party "in honor of that time shared."
Jason Mraz & Tristan Prettyman
The "I'm Yours" singer is no longer his fiancée's as the two decided to go their separate ways following a six-month engagement. So much for making beautiful music together.
Ginnifer Goodwin & Joey Kern
Just five months after getting engaged (with a ring Kern designed himself!), the cute couple called it quits after dating for two years.
Christopher Knight & Adrianne Curry
The former Brady Bunch star and his Top Model of a wife announced their separation on what would have been their fifth wedding anniversary. It's times like these you wish Alice could just step in and make it all better.
Leonardo DiCaprio & Bar Refaeli
First Gisele and now Bar—the actor parts ways with another hot model after four years of on-off dating. We're sure all the Leo lovers out there are not sad at all.
Arnold Schwarzenegger & Maria Shriver
The Hollywood and political power couple revealed in a statement to the L.A. Times that they have separated after 25 years of marriage. "After a great deal of thought, reflection, discussion and prayer, we came to this decision together. At this time, we are living apart while we work on the future of our relationship."
Jennifer Love Hewitt & Alex Beh
Unlucky in love once again. After nearly a year of dating, the actress's rep confirmed she and her actor-director beau have called it quits.
Landon Donovan & Bianca Kajlich
Despite his game-winning kiss blown round the World Cup, the soccer stud filed for divorce just before Christmas, citing the go-to irreconcilable differences—and requesting spousal support (!) from his actress wife.
Scarlett Johansson & Ryan Reynolds
There was just way too much hotness here for one couple, so we weren't really surprised to hear their beautiful romance had cooled after two years of marriage.
Jennifer Carpenter & Michael C. Hall
After less than two years of marriage and a battle with Hodgkin's lymphoma (for Hall), the kissing costars—who play brother and sister on Dexter—confirmed that they are divorcing. But according to their reps, the breakup was amicable.
Zac Efron & Vanessa Hudgens
Sad news: Everybody's favorite High School Musical sweethearts quietly decided to break up recently. A source says that their relationship "ran its course" and insists that the Young Hollywood hotties will "remain friends."
Elizabeth Hurley & Arun Nayar
After three years of marriage and one tabloid rumor of infidelity, the British beauty announced via Twitter that she and her hubby were calling it quits. "Not a great day," Liz tweeted. "For the record, my husband Arun & I separated a few months ago."
Neve Campbell & John Light
The Scream star and her English actor hubby may have called it quits, but news of their split didn't come out until five months later!
Eva Longoria & Tony Parker
The Desperate Housewives star filed for divorce from her basketball-playing husband amid rumors of his infidelity. "It is with great sadness that after 7 years together, Tony and I have decided to divorce," Eva tweeted. "We love each other deeply and pray for each other's happiness."
Darren Aronofsky & Rachel Weisz
The acclaimed director and his Academy Award-winning actress fiancée split up after nearly a decade together. The couple, whose five-year engagement lasted longer than most Hollywood marriages, will share custody of their 4-year-old son, Henry.
Billy Ray & Tish Cyrus
Just shy of daughter Miley Cyrus' 18th birthday, her parents announced they are divorcing after 17 years of marriage.
Penn Badgley & Blake Lively
The Gossip Girl lovebirds are staying on script—like their characters, Serena and Dan, the couple have called it quits after years of dating.
Christina Aguilera & Jordan Bratman
It's not known exactly when the music died for this duo, but the pop diva and her music marketer hubby have separated after nearly five years of matrimony. Although they're living apart, the couple haven't filed for divorce yet and are trying to work things out for the sake of their son, Max.
Courteney Cox & David Arquette
The unlikely pair coupled up on the set of the first Scream movie and announced their split after filming the latest installment of the franchise this summer. Will they remain, er, Friends, after 11 years of marriage and a daughter together? We'll have to wait and see.