Erin Fetherston is all about ethereal, fantastical frocks, and this white asymmetrical cloud-like dress from her Spring '09 collection is no exception. On the catwalk it was cinched with a pretty metallic purple belt, but Kate Beckinsale opted for an edgier look at the R&Y Augousti and Barneys New York dinner.

Black and white is a great color combination and the actress wears it well. But what do you think about the cloud detail on the bottom? Does Kate pull it off or does she look immature?