J.Lo and Gwen Stefani Battle It Out for Best Dressed

From telling TV appearances to flashy red carpets, this week's standout looks oozed glamour. Jennifer Lopez owned her exaggerated shoulders on the Ellen DeGeneres Show, while Gwen Stefani opted for the one-arm statement sleeve on Today. At Variety’s annual Power of Women luncheon, Blake Lively vented some frustration about her fashion, and in the south of France, Julia Roberts did black tie with a twist! Yahoo Style’s Joe Zee rounds up his favorite looks of the week and pits them head-to-head to see who will emerge as the winners in this week’s edition of Knockout Style.