Alyson Hannigan and Alexis Denisof Welcome First Child!

Alyson Hannigan and her husband, Alexis Denisof, who have both uttered memorable How I Met Your Mother quotes in their day, kept the gender of their baby secret throughout her pregnancy, which the sitcom went out of its way to mask.

Well, it's a girl – and she shares her birthday with her mom!

The baby girl named Satyana Denisof was born March 24 in Los Angeles, which also happens to be Hannigan's birthday. Now that's a coincidence.

"They're very excited, and mom and baby are doing great," says the rep.

Hannigan, 35, first announced she was expecting last October.

This is the first child for the actress and Denisof, 43, who first met on the set of Buffy the Vampire Slayer during the 1999-2000 season and were married at the Two Bunch Palms resort near Palm Springs, Calif., in 2003. Congratulations!