Sudden, shocking star breakups

Tom Cruise and Katie Holmes: The Rock Of Ages star and actress Katie Holmes were married for five years until Katie filed divorce papers anonymously on June 30, 2012 in New York citing 'irreconcilable differences'. Since then Hollywood's most high profile couple have been fighting a bitter divorce battle.

The couple had quite a fairy tale romance. It was way back in 2005, that Cruise expressed his love for Katie in Oprah Winfrey's show by jumping up and down on the couch in excitement over his newfound love. Then he proposed to her at the top of Eiffel Tower in Paris.

In 2006, Katie gave birth to their first child Suri and the same year they got married at the15th-century Odescalchi Castle in Bracciano, Italy.

But Katie Holmes admitted that life with the actor made her feel like a 'robot'. By all accounts, Tom didn't see it coming.

Tom Cruise has reportedly counter filed for divorce and has hired the same lawyer that he used during his split with second wife Nicole Kidman. He is all set for a bitter custody battle over Suri Cruise.

Coming up: More shocking celebrity break-ups

Kim Kardashian and Kris Humphries: Reality television star Kim Kardashian is filing for divorce from her husband Kris Humphries after only 72 days of marriage.

Keeping Up With The Kardashians producer and entertainment mogul Ryan Seacrest broke the news on Twitter. Soon after, the new became a hot topic on the social networking site.

Earlier in September, Kim had made a statement in the press saying that the constant media pressure was taking a toll on her marriage to basketball star Humphries.

Coming up: More shocking celebrity break-ups

JLo and Mark Anthony: With three failed marriages between them, Jennifer Lopez and Marc Anthony finally seemed to find true love together when they married seven years ago. Since then, they were often billed as one of Hollywood's most high-profile couples. They had twin children (Emme and Max) went on tour together, did a movie together and even planned a music-based reality show, together. Days ago, they announced a surprising split. In the fluid world of celebrity relationships, they seemed inseparable since their wedding in 2004, after years of knowing each other.

Maria Shriver and Arnold Schwarzenegger: The JLo – Mark Anthony shocker comes as the dust is settling down on another celebrity breakup which made the world gasp. Maria Shriver and Arnold Schwarzenegger were married for 25 years, after first meeting 34 years ago. Once dubbed an unlikely couple, no one could imagine that in private, after 25 years and 4 children together; the Shriver- Schwarzenegger marriage was a sham. The marriage finally unraveled following revelations of an affair between Arnold and the couple's long-time housekeeper, Mildred “Patty” Beana. The actor and former California Governor admitted to fathering a child with Beana.

George Clooney and Elisabetta Canalis: After 2 years, just when it seemed that drop-dead Italian actress Elisabetta Canalis had managed to snare Hollywood hottest bachelor, comes the bomb. The two decided to pull the plug on a romance which appeared to be doing fine and looking stunning, between the two. While the world was still coming up for air, this terse statement from the couple said it all, or rather very little: ‘We are not together anymore. It's very difficult and very personal and we hope everyone can respect our privacy.'

Hugh Hefner and Crystal Harris: Wedding bells were due to ring at the Playboy mansion between 85-year-old multimillionaire mogul Hugh Hefner and his former “bunny” 25-year–old Crystal Harris. Even as a Playboy issue hit the stands with a cover introducing “Mrs Hugh Hefner” to the world, Crystal high-tailed from Hugh's life, reportedly after a nasty argument. Could anyone have seen this coming when custom Swarovski crystal-encrusted invitations were mailed to more than 300 guests?

Prince Harry and Chelsy Davy: When Chelsy Davy accompanied Prince Harry to the April 29 Royal Wedding of Prince William and Kate Middleton, many said Chelsy was another princess-in-waiting. A tall order for the tempestuous relationship Prince Harry shared with his “special girlfriend”. The couple apparently fell out after Chelsy told Harry she was homesick and planned to move back to Africa to be closer to her family. Not that it's new for this often-faltering couple, but Chelsy firmly at Harry's side in April and a breakup in a little over a month, is surprising, even for them.

Leonardo DiCaprio and Bar Refaeli: So they finally split after 4 years and here's why this one was surprising. Apparently they split because Bar, at 26, wanted to take the next step and Leo at 36, wasn't ready to do so! Now what is Leo thinking? Not ready to settle down with a supermodel, ranked at 6 on the 2011 Maxim list of “Hot 100" women? Come now. That's a surprising breakup, considering they did it once before and reconciled within months.

Charlie Sheen and his “goddesses”: The troubled actor has been in the news for his rants as much as his simultaneous relationship with two women, he dubbed as his “goddesses.” Sheen repeatedly showed off the two 24-year-olds as “an international sensation, my girlfriends, the women that I love that have completed the three parts of my heart.” The gushing came to an abrupt halt when “goddesses” 1 and 2, Bree Olson and Natalie Kenly, dumped the star. Bree Olson reportedly sent a text to Sheen, dumping him in April, while Natalie Kenly moved out of his mansion in June.

Scarlett Johansson and Sean Penn: There was even a baby buzz here, ScarJo was reportedly expecting Sean Penn's baby. She had just moved into Sean Penn's home, there was plenty of PDA and just when we thought this one would last for a while at least, news of a split surfaced. Was it the 24-year difference between them that finally did it to the once much-loved couple? With ScarPenn's reps keeping mum, we will never really know.

Bipasha Basu and John Abraham: In a decade-old relationship, breakup rumours can crop up every now and then, just as they did with this good-looking couple. But this time it was more than just the occasional hiccup and despite continuing joint endorsements, Bipasha and John finally called it quits, individually acknowledging the end of their relationship. Not quite expected from one of the steadiest couples around.

Preity Zinta and Ness Wadia: Surprise, surprise. After a pretty nasty breakup with reasons as varied as Preity's “friendship” with cricketer Yuvraj Singh to Ness' mother Maureen Wadia's “non-acceptance” of her, Preity and Ness have recently struck up a friendship again. Two years have elapsed since they split and from then on, surprises and rumours have been in plenty.