Now this is how you wow on a red carpet!
Wearing a glamorous Schiaparelli velvet gown with a plunging neckline nearly down to her belly button, the Iron Man starlet had it all going on!
Her gorg, almost vampy-like number even featured crystal embellishments and a sexy, low back.
It's one of her best looks yet!
And Kate held her own in a stunning floral Giles Deacon gown, which clung to her every curve!
Jennifer Meyer jewelry, nude Brian Atwood platform sandals, and her purposefully tousled updo completed the flawless look.
For real, it's impossible to choose a fave between these two! Good luck trying!
[Image via Media Punch.]