Katy Perry has blamed Russell Brand for their marriage breakdown.

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The Rock of Ages actor filed for divorce from the pop star in December 2011 but Perry believes Brand’s refusal to come visit her while she was on her world tour is one of the main reasons their 14-month union ended.

When asked by The Sun if Brand’s lack of visits was the catalyst for the break-up, Perry replied: ”Yes, if I could edit it any other way I would but Brand.

”I always had plans to make this record (Teenage Dream) and, usually with a record, you tour.

”Touring is always important to me. It’s like a big IOU to my fans, because I know they are the reason I exist.”

It had been speculated that the pair’s marriage imploded because Brand, 37, wanted kids and 27-year-old Perry wasn’t ready, but the pop star insists she can’t even think about having children until her career slows down.

She explained: ”Ever since I was younger I wanted to be on stage, singing my songs in a glittering costume. And that happened and is still happening. I have to remember that this is what I wished for and be grateful because there are 500 other girls right behind me that are ready to snatch it up.

”When I decide to become a mother I will just be that. That will be really important to me.

”I want to be delicate with that situation, because I will finally have someone’s life in my hands.”