Because they weren't on the stage but at after parties. Many beauties after the jump...
Hailee Steinfeld, Diane Kruger
(All) Powerful Couple
Kylie Minogue, Sam Taylor-Johnson, Aaron Taylor-Johnson, Amy Adams
Andie Macdowell, Juliette Lewis
omg. Its the Collins sisters. Do you think Benedict Cumberbatch loves DYNASTY or has read "Rock Star"?
Lupita Nyong'o, Sasha Baron Cohen & Isla Fisher, Natalie Portman
Angie Harmon WITH CARBS!!! and Robert Pattinson
This picture upsets me. Hands off Voight! 
Easy A reunion and NO ONE snapped a photo of them together. Ugh, the paparazzi disappoint.
Nivola
I had to end with Alessandro Nivola because the post has "Beauty" in the title and there just aren't enough pictures of him in the world. Couldn't find a full tux shot, sadly.
And if you haven't seen them you should check out Mark Seliger's Instagram Portraits of the stars for Vanity Fair...
