Sienna Miller debuts new fringe as fashion pack come out for Matthew Williamson bash

Earlier this month, she wowed at the Costume Institute Gala in a navy blue dress as she and beau Jude Law went public with their rekindled romance.

And this week, Sienna Miller got the flashbulbs going again as she showed off a chic new hairdo at a party hosted by her designer friend, Matthew Williamson.

Her new bangs weren't the only fashion-forward part of Sienna's look, though.

The Factory Girl actress dressed smartly from head-to-toe, wearing a lovely gold draped frock with black platform sandals, which she topped off with bold, red lips.

Also celebrating with Matthew was a fashionable crowd that included her sister, Savannah, Peaches Geldof and style icon Twiggy.

And while Sienna arrived without Jude - her main companion these days - she looked completely at ease in the company of her pals as they shared plenty of hugs and laughs throughout the night.