"Mad Men"
star Christina Hendricks and her famous curves turn 37 years old today!

Hendricks, who plays the sassy Joan Holloway on the hit AMC show, always mesmerizes whenever she steps out on the red carpet, thanks to her figure and sexy, eye-popping ensembles.

To celebrate Hendricks' b-day, we put together a gallery of her most revealing looks ... and trust us, there are a lot of 'em!

Check out her hottest looks above.