Considering the starlet is one of E!'s main moneymakers, it almost seems like choice has been made!
BUT there's one other star who would like to join the contenders…
The even was hosted by King Giorgio Armani, but neither of them wore his designs!
Instead, Diane opted for a black and blue Chantilly lace dress from Jason Wu's upcoming resort collection. She completed her look with Repossi earrings, a Judith Leiber clutch and black strappy sandals.
Both ladies look absolutely stunning! We couldn't possibly decide who was best dressed.
[Image via Mavrix Online.]