Girls Aloud member Cheryl Cole reportedly stepped out in a head-turning, see-through dress as she celebrated her 26th birthday.A crowd of partygoers outside private members? club Vanilla in London were shocked to see Cheryl in the revealing Alexander McQueen dress. ?Cheryl?s dress was a real head-turner. It was the talking point on the night,? the Daily Star quoted a partygoer as saying. ?Most of the girls weren?t sure ? but the lads certainly liked it. ?Cheryl is a beautiful girl and by wearing that dress she proved she has her own individual style,? the partygoer added.