The mom-to-be hit the event in a long-sleeved black frock.
Kourtney wowed in a blue Mlle Mademoiselle number while Scott looked very sharp in a clean black suit.
The E! News host opted for a simple black Amen sheath and BaubleBar statement necklace.
No tie, no problem! The American Idol host showed how to pull off the casual suit look.
Hot under the collar! Kelly paired a ruffled top with a simple skirt combo.
Looking sharp! The E! News host is all smiles on the red carpet.
Like mother, like daughter! Kris donned a red Valentino dress almost a year after Kim stepped out in a similar lace frock.
While Danielle wore a printed dress, Kevin opted for a green and blue suit combo. The Married to Jonas stars and real-life couple managed to match their look by coordinating her peachy heels with his pocket square.
One dapper duo! Both guys looked extremely handsome in tailored suits.
The country singer matched perfectly with her NFL beau, both of whom will be coming to E! in a new series about their life together.
Suit up! The funnylady posed in a cute blazer with matching pants.
Well, yellow there! The Fashion Police host showed he wasn't afraid of sporting bright colors.
The E! News correspondent brightened up the carpet in a neon stripped dress.
The Soup host cleans up nicely in a a navy blue suit.
The E! News Weekend host looked gorgeous in a floral peplum Angelys Balek dress and dark plum lipstick.
The WWE Divas flaunted their fit figures in metallic minis.
NEXT GALLERY: The Best of the Red Carpet