Sienna's big knickers

Ever since big knickers appeared as outerwear on the spring/summer catwalks we've been laying bets on which daffy celeb would be the first to step out in this frankly rather odd look.

So it was a little worrying to find these snaps of Sienna Miller at the NY premiere for Factory Girl - given that most of us spent 2005 in peasant skirts and ponchos thanks to her famous boho chic, it's not impossible that this will catch on.

We say: very nice that big knickers are back in fashion - just don't forget your skirt, OK?

Below are a couple of our favourites, from Charnos (left) and Ballet.

Sienna image: Rex