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January Jones Is Back On Set Of 'Mad Men' (PHOTOS)

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JANUARY JONES
INF

January jones is wasting no time. After giving birth to her son, Xander Dane, last month, Jones is already back to work.

The 33-year-old star was spotted on set of the hit AMC series "Mad Men" on Monday, channeling her icy character, Betty Draper Francis. Her co-stars, Jon Hamm & John Slattery were caught in character last month in Los Angeles, sporting their skinny ties and ad man attitudes.

Jones had her main man, baby Xander, close by. The 1-month-old slept in his mommy's trailer while she shot scenes. "Mad Men" is set to return to the small screen in early 2012.

PHOTOS:

Here are more shots of our favorite stars hard at work!