Rihanna and Katy Perry stepped out in identical lilac jumper dresses this week.

The Umbrella singer assessorised her knitted number with a bum-bag as she left her London hotel.

And just the night before, a make-up free Katy wore the same mini dress for a dinner date at Phillippe Chow in Los Angeles, teaming hers with over-the-knee black boots and a gold bag.

It's a tame look by this pair's usual outlandish standards - but who wore it best?

Celebrity Fashion Face-Off