AHannigan040112_01_230.jpg It's a girl!

Alyson Hannigan and husband Alexis Denisof welcomed their second child, daughter Keeva Jane, on May 23, her rep tells Us Weekly. The newborn joins big sister Satyana, 3.

The How I Met Your Mother star wed Denisof, 46, in 2003. The 38-year-old actress is the latest celeb to pop during the Hollywood baby boom, following Jennifer Garner, Hilary Duff, and most recently Jessica Simpson.

"They are doing well," her rep adds.

Congrats to the happy family!