Who? Former Wrestler, current model and girlfriend of George Clooney, Stacy Keibler
What? Stacy Keibler joined George Clooney on the red carpet for the premiere of movie, Argo wearing a vintage Alaia dress with a rather extreme approach to cut-out detailing. In fact, but for a cross-strap at shoulder blade height, it would have fallen into the "backless" category. Obvs Stacy's toned figure is the perfect vehicle for the garment (and vice versa) so we're not surprised that she opted to keep the focus on the gown via some low-key makeup and a simple volumised updo.
Where? The California premiere of Argo, 4 October