Celebrity Parents Uma Thurman Expecting Third Child The actress is expecting a child with financier beau Arpad Busson By Elizabeth Leonard Elizabeth Leonard Elizabeth Leonard is Managing Executive Editor and West Coast Bureau Chief for PEOPLE, where she's worked in leadership positions across the brand's entertainment and human interest verticals for 25 years. People Editorial Guidelines Published on February 27, 2012 04:00PM EST Photo: Donald Traill/AP There’s a baby on the way for Uma Thurman. The actress, 41, is set to welcome her first child with financier Arpad Busson, a rep for Thurman confirms to PEOPLE exclusively. Thurman, whose bump went unnoticed when she stepped out for New York Fashion Week earlier this month, has two children – daughter Maya, 13, and son Levon, 10 – with ex-husband Ethan Hawke. She and Busson, 49, began dating in 2007 and, after a brief split in 2009, have been together since. Star Moms Over 40 Last June, the couple joined Prince William and Kate at a lavish charity gala at Kensington Palace, an event that marked the Royal couple’s official “coming out” as newlyweds. The gala benefited Busson’s Absolute Return for Kids (ARK) charity. Thurman will soon appear in a five-episode arc in NBC’s drama Smash.