Three is the magic number for Dixie Chick Martie Maguire and her professor hubbie, Gareth. The songbird, 38, is pregnant with their third baby. The couple already have two lil chicks — 3-year-old twins Eva Ruth and Kathleen Emilie.

According to People Magazine:

In regard to the growing brood between her and the rest of the Dixies – Natalie Maines and Emily Robison – Maguire says, "We'll have to move over and let the little chicks take over! We've got a new band!