'Pretty Woman' and Guns N' Roses: what Sienna and Agyness' favourite designers have in store for spring

We'll never have Sienna Miller's tousled English rose beauty or the A-list beaux, but her wardrobe – now that's one thing we can emulate.

Same goes for Agyness Deyn or Twilighter Kristen Stewart's.

These are the girls millions want to look like, and the radical designers they favour will be in the spotlight, providing lots of ideas for spring 2010, as London Fashion Week celebrates its 25th year this month.

Right now in his East London atelier Henry Holland – Agyness' best friend - is busy plotting a collection inspired by marriage, Pretty Woman, Guns N' Roses. Think Julia Roberts in ripped, grungy t-shirts.

He will join Peter Pilotto, one of Sienna's favourites, and Mark Fast who dresses vampire groupie Kristen in furnishing some of the crazy Young Turk energy for which the capital is renowned.

The six-day extravaganza – from September 18 – 23 – also promises us the return of Burberry and Matthew Williamson as well as Pringle, Stella McCartney for adidas, and Jonathan Saunders, who disappeared for years to New York, Paris and Milan.

As Burberry's creative director Christopher Bailey put it: “It’s the 25th anniversary, films are being made, art, theatre and design are buzzing, they’re planning the Olympics. London is the place to be right now.