Via Entertainment Weekly:

Hours after Lionsgate announced that Elizabeth Banks would play the baby-crazed owner of ‘The Breast Choice’ store in What To Expect What You’re Expecting, EW has learned exclusively that she has hired her first employee. Rebel Wilson, Kristin Wiig’s scene-stealing British roommate from Bridesmaids, will join the ensemble comedy as Janice, an employee at the pregnant Banks’ store.

Wilson, who is actually Australian, has a strong background in television and stand-up down under. She is slated to appear in McG’s This Means War alongside Chris Pine and Reese Witherspoon early in 2012, and will follow up with a role in the indie flick Small Apartments.

By Shaunna Murphy

Source: http://insidemovies.ew.com/2011/07/11/rebel-wilson-what-to-expect-when-youre-expecting/