It's all black and white on the night for Katy Perry.

Katy Perry really won me over with her appearance on The Graham Norton Show which aired last night. Sure, she played the game and engaged in plenty of touchy-feely with Chery Cole - a little faux girl-on-girl action is always a good bet for a few extra column inches - but on the whole I thought she was frank and funny.

When Cheryl's skintight houndstooth leopard print peplum get up wasn't searing my retinas, I had a good gawk at Katy Perry's fingertips. She can always be relied on for a bit of nail art, can Katy, and last night's show was no exception.

Tipping the nod to the '90s - I warned you they were back - Katy opted for a full set of yin yang nails to go with her adorably demure vintage-looking black and cream dress and black ballet flats.

What do you reckon to Katy's well-balanced manicure? Love it or leave it?

{image sources: 1. Girls Aloud Media; 2. Haute Couturise; 3. Makaveli-Soldier}