Gwyneth Paltrow, Kate Hudson & More Celebrities Don Blue & Diamonds At The Tiffany & Co. Blue Book Ball [PHOTOS]

Gwyneth's Plunge
Gwyneth Paltrow gets sexy on the red carpet.
What do you get when you mix celebrities, the color blue and diamonds? Why, the Tiffany & Co. Blue Book Ball!

All the stars were out and about on the red carpet at New York City’s Rockefeller Center looking all sorts of stunning. Gwyneth Paltrow looked beautiful in a drapy, shiny blue number complete with a diamond cuff on her left wrist.

Kate Hudson truly stole the show in her Tiffany blue gown by Reem Acra. Just look at that slit! Damn girl. Now that is a good way to start any birthday celebration. So which other lovely ladies–and a few lovely men–were spotted on the red carpet? 

Carey Mulligan wore a rather interesting outfit. She opted for a plunging black cape/jacket paired with a pair of black trousers. Lucky for Carey, she’s one of those who can where whatever she wants and still look gorgeous. Michelle Williams also looked very chic in a navy dress. You know, I used to like her hair, but I’m not really digging whatever she’s doing to it recently.

Also, how beautiful does Jessica Biel look? Love it. Others celebrities who were spotted at the event, which included a musical performance from Smash star Megan Hilty, include Sarah Jessica Parker, Baz Luhrumann, Alive Eve and more. Check out all the photos in the gallery and tell us who you think is best dressed in the comments! My votes goes to Kate!