The Baby Mama Premiere Was Chock-Full Of Hot Mamas

It's safe to say that, by this point, everyone knows everything they need to know about Tina Fey and Amy Poehler's new movie, Baby Mama. But did you know that it opened last night at the Tribeca Film Festival? And that, in addition to Fey (left) and Poehler, SNL peeps Rachel Dratch, Molly Shannon and Lorne Michaels…