Mader, 35, will play some sort of "temptress." The actress was snapped filming with star Alec Baldwin on Thursday.
30 Rock announced Thursday that Liz Lemon will walk down the aisle in two weeks. This is the same episode in which Dean Winters, who played one of Liz's horrible exes, will return. Also, check out which other guest stars we'd like to see back.
The show airs Thursdays at 8/7c on NBC.