See More Golden Globes After-Party Madness

The theme of last night's Golden Globe after-parties was ... cleavage!

Naya Rivera put her hot post-baby bod on full display at the InStyle and Warner Bros. bash, showing some serious skin in a purple and black silk Pamela Rolland wrap gown with a sky-high slit. She paired her revealing ensemble with black stilettos, tousled, shoulder-length waves and a nude lip.

The "Glee" alum welcomed baby Josey back in September, and she clearly didn't have any trouble bouncing back to pre-baby shape!

Kaley Cuoco also took the plunge for last night's party circuit, where she flaunted her teeny tiny waist and long legs in a low-cut red gown with a fitted top and flowing skirt. She added a touch of edge with a messy bob and smokey bronze eye makeup.

The "Big Bang Theory" star recently split from husband Ryan Sweeting. Looking H-O-T is the best revenge, right?!

Another star to show some crazy cleavage for InStyle's soiree was Rumer Willis. The actress' white gown dropped below her belly button in the front, which perfectly showcased her rock-hard abs. She completed her show-stopping look with Parade diamond earrings, a swept-back 'do and dark eye makeup.

But, let's be honest, no one is looking at her makeup!

Check out ALL of the stars who came out to celebrate last night in the gallery above.

Who had your favorite cleavage-baring look? Sound off below!

Check out toofab's picks for the best and worst dressed stars at the Golden Globes below: