Pictured above left to right: Gwyneth Paltrow, Liv Tyler and Helena Christensen.

Gwyneth Paltrow bagged another yet style winner last night at the New York screening of her new film Iron Man, hosted by Michael Kors. The screen siren has been on a winning ticket lately fashionably-speaking and didn't disappoint in this daring halter neck dress by Stella McCartney and black patent Christian Louboutin heels.

Liv Tyler flashed those pearly whites of hers with a newly chopped do' (is she taking style notes from Gwynnie?). I can't say that she has won me over in her choice of outfit - an oversized sequinned sweater dress, also by Stella McCartney, although I am loving the shoes!

Supermodel Helena Christensen did her best Pam Anderson impression in this khaki shirt dress from Michael Kors' Resort '08 collection, with exposed cleavage. Being Helena, she can get away with it without looking too tacky, but it's Gwyneth who has won my vote on this occasion.

How about you? Whose outfit impressed you the most? Tell us by leaving your comments below.