By Tanner Stransky
Updated August 13, 2010 at 09:56 AM EDT

Kelsey Grammer, 55, and his girlfriend Kayte Walsh, 29, are expecting their first child together, Grammer’s rep confirmed to People. The new baby will be Grammer’s fifth child. The Frasier star was married for 13 years to Camille Donatacci, who filed for divorce from the actor last month. Grammer and Donatacci share two children, daughter Mason, 8, and son Jude, 5, while Grammer has two older daughters, Spencer and Greer, from previous relationships.