Pop star Katy Perry is set to step into the fashion world by launching her own design line.

The ‘California Gurls’ singer, known for her colourful and sexy costumes, is currently in talks with fashion giant Steve Madden to design her own range, reports contactmusic.

Madden, the founder of his eponymous shoe range, has previously teamed with former child stars Mary-Kate and Ashley Olsen to make their Olsenboye and Elizabeth and James clothing lines.