Who walks away richer from Perry-Brand split?

Video: Behind the split: Why Brand and Perry called it quits

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   >>> we are learning more about what may have led to the end of katy perry and russell brand 's marriage after 14 months. stephanie gosk is in london with the details.

   >> good morning, peter. 2011 was a blowout year for katy perry 's career. the first female singer to have five singles from the same album, launched her " california dreams " tour but professional success could not keep her personal life together and by the end of the year it crumbled. it was a whirlwind romance. they met at the mtv awards in 2009 , engaged the same year, married the next. in 2011 it ended as quickly as it had begun. russell brand filed for divorce citing irreconcilable differences . a year-end surprise for fans that believed in the couple's fairytale.

   >> these were two people who were very in love, very committed, for the time that they were together, and it unraveled very quickly.

   >> reporter: rumors had been twirling for months that the marriage was off to a rocky start, despite brand's efforts to keep their lives private.

   >> the romantic element i keep private, between me and my lovely wife.

   >> reporter: in early november ellen degeneres asked them if they had split up.

   >> what! she should have told me.

   >> they never are in the same place at the same time.

   >> reporter: katy perry kicked off her " california dreams " tour. brand who starred in the remake of "arthur" had his own demanding shoot schedule. when they had a chance to take a break, they spent the holiday thousands of mild apart, brand back home in england with friends. perry took time off in hawaii, neither one was wearing their wedding ring . hollywood watchers spent the holidays speculating on what finally broke them apart.

   >> it's the age-old problem in the world of celebrity, one is more successful than the other. russell did ride on katy's coattails when he hit hollywood .

   >> reporter: the two came from vastly different backgrounds, perry raised in california by strict evangelical christians , brand had a troubled childhood, raised in working class england by single parents . as a young adult he struggled with drugs, alcohol and sex but whatever the irreconcilable differences may have been the pair that thrilled their fans with a lightning fast fairytale romance have now become just the latest hollywood casualty. the celebrity gossip website tmz reports that brand filed the divorce papers because perry didn't want to overly upset her conservative parents. regardless, it must still be a very difficult time for everyone involved. peter?

   >> steph, thank you very much. hard to imagine that relationship working, where they're like never together.

   >> hard to start a marriage like that.

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