Alexa helps Levi's launch new jeans

We all know that the perfect pair of jeans is fashion's Holy Grail, and Levi's is on a mission to make the search a little bit easier. It's just launched its latest denim line, Curve ID. The idea? There are three different fits, Slight, Semi and Bold, and each one has been designed around the shape rather than size of women's bodies. So whatever your proportions there should be a pair that works for you, and Levi's stores will be armed with 'Curve Consultants' to help you find it.

Last night the denim brand kicked off the line with a party at Studio Valbonne in London. Alexa Chung, Pixie Geldof and Florence Welch topped our best dressed list. Alexa was perfectly styled in a leather skirt and slouchy jumper. Florence opted for a vintage dress, waistcoat and trilby. And Pixie channeled her inner rock chick with an Eminem T-shirt and black skinny jeans.

Click here to see who wore what last night...