Well, that's one way to hide a pregnancy. January Jones made her debut on the  fifth season of Mad Men last night in a very big way!OK! GALLERY: MAD MEN CAST RINGS THE OPENING BELL AT THE NEW YORK STOCK EXCHANGEThe Jon Hamm-directed episode focused on Betty Francis' (January) weight gain. At the time this episode was filmed, January was pregnant with her son, Xander Dane Jones. But no, that's not how January looked while she was pregnant! Rather than trying to hide her baby bump, Mad Men writers got creative and played up January's slight weight ... Read More >>