January Jones, Jon Hamm & the 'Mad Men' Cast Have a Ball

January Jones shows off her smile at the AMC Celebration of Mad Men With the Black & Red Ball at the Dorothy Chandler Pavilion on Wednesday evening (March 25) in Los Angeles.

The 37-year-old actress celebrated the final seven episodes with her co-stars Jon Hamm, Christina Hendricks, Kiernan Shipka, John Slattery, Vincent Kartheiser, and Rich Sommer along with Ty Burrell, Jon Cryer, Lacey Chabert, Beth Behrs, Colin Egglesfield, Alyssa Sutherland, and Dana Delany.

PHOTOS: Check out the latest pics of January Jones

In case you missed it, check out Jon opening up about his stint in rehab for alcohol abuse.

FYI: Christina is wearing a Zac Posen gown. Beth is carrying a Kotur clutch.

20+ pictures inside of January Jones, Jon Hamm, and more at the big bash in L.A…