January Jones Mad About Her New Man Jason

January Jones was spotted with her new boyfriend, Jason Sudeikis, going to a birthday party in Hollywood yesterday. The couple seems to be getting pretty serious pretty fast; they were spotted out to lunch last week. Earlier in the week, on-lookers reported the couple being especially affectionate at the ESPYs and at an ESPYs after party.

OK! NEWS: JANUARY JONES' HIT & RUN - MAD MEN STAR FLEES ACCIDENT SCENE

Since splitting with his wife, 30 Rock writer Kay Cannon, Jason was rumored to be romantically linked with Jennifer Anniston. If the pair did date, they sure did move on quickly!

Last month, cameras caught January on her walk of shame! She was snapped taking a cab at 10:30 in the morning, still wearing her cocktail dress from the night before! Hey, January, maybe you should leave a change of clothes at Jason's house so it doesn't happen again!