January Jones has done it again.
The Mad Men actress, 33, seriously bared her cleavage in a daring, red-hot Versace gown featuring revealing side cut-outs. (Jones posed nude in sultry ads for the brand's accessories line.)
PHOTOS: What all the stars wore at the Globes
Says E!'s fashion police: "With a dress like this...the line between classy and crass is a hard one to walk."
At HBO's after party at Circa 55, Jones told UsMagazine.com about baring all in her Versace shoot. "I loved it," she gushed. "And, as a matter of fact, I’m wearing Versace right now!”
PHOTOS: Who did January hook up with last year?
Tell Us: Love it or hate it?
Get more Us! Follow us on Twitter, Friend us on Facebook, Subscribe to Us Weekly
From George and Sandra to Taylor and Ed, see more of Hollywood's platonic pairs.
Check out which of Hollywood's geeky guys get all the hottest ladies.
See some of the hottest celebs that joined frats and sororities while in college.
It's a girls night out for celebs like Jennifer Lopez, Khloe Kardashian, Leah Remini, Brooklyn Decker, and more on Celebs Gone Social.
See how Kim Kardashian, Fergie, Duchess Kate and more celebs look now that they've lost their pregnancy weight.
Taylor Swift shares stunning photos of her time in New Zealand on Celebs Gone Social.
See which stars just get better with age.
© 2013 Microsoft