Katy Perry has insisted she still believes in love after her painful break-up with Russell Brand.

The Firework singer and her comedian husband split just 14 months after their October 2010 wedding, and Katy's new 3D concert film Katy Perry: Part Of Me deals with their marital breakdown.

Katy, 27, said of the movie: "I think it was important for me to leave some of the more difficult things in the film so that it wasn't just a narcissistic fanfare film about how great I am. Because I'm not all great... I think it was important to show that there are obstacles and problems in people's lives and it's ok if you have them."

She added: "I still believe in love, most definitely. I'm just going to let that take the lead."

Katy also said she plans to take some risks on her next album - and take a break from the limelight for a while.

"I don't want to completely self-sabotage everything that I've got and alienate everyone. But I definitely want to take some chances as I always have. And after the movie comes out, I think it'll be appropriate for me to go away for a while," she explained.

The star, who is now rumoured to be dating Florence And The Machine guitarist Rob Ackroyd, added: "I'll continue to try and balance like a circus act. And I will just fight to always tell the truth. Even if it's difficult."