It looks like the fledgling Sterling Cooper Draper Pryce advertising agency is staffing up!

Casting for Mad Men’s upcoming fourth season has begun and, according to sources, boss Matthew Weiner is adding three new potentially recurring characters. The rookie trio includes…

… a handsome and creative male; a voluptuous, curvy, and cute brunette who is friendly but professional; and an affable guy who is a bit lacking in personality.

Production on the season premiere — tentatively titled “Public Relations” — is scheduled to get underway on April 12.

http://ausiellofiles.ew.com/2010/04/01/mad-men-season-4-scoop/