By StyleWatch
Updated June 16, 2009 06:54 PM

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Mad Men star Christina Hendricks not only is filming the third season of the critically acclaimed drama, but she is planning a wedding to longtime beau, Trust Me actor Geoffrey Arend for Oct. 11 in Manhattan. “It’s exciting,” Hendricks tells “I’m wearing a beautiful Carolina Herrera dream gown.” It won’t be the first time that the sexy star has donned Carolina Herrera — she heated up the red carpet at the SAG Awards in a curve-hugging scarlet gown by the designer. For his own stylish turn, the groom will wear a tuxedo designed by Brooks Brothers. But don’t expect to see co-stars Jon Hamm and January Jones in the wedding album. Hendricks tells that none of her Mad Men castmates will be attending as it is “a small wedding, mostly family.”