Newcomer Margot Robbie may not be familiar to most, but after tonight’s 87th Annual Academy Awards red carpet everyone will know her name. The Australian actress had our jaws dropping in her black plunging floor length Yves Saint Laurent gown. From the hair to those jewels, hands down Margot’s dress is amazing. E! Host Giuliana Rancic & Kelly Osbourne just couldn’t stop talking about her. Check out the video to get a glimpse of Margot Robbie’s stunning red carpet gown.