Alyson Hannigan expecting second child

(CBS) Art is imitating life for Alyson Hannigan. The actress' "How I Met Your Mother" character is pregnant, and the actress is expecting off-screen too.

"Yes, I am pregnant! This time it is NOT a food baby," she tweeted on Friday. "We are beyond happy!"

Pictures: Celebrity baby bumps

Her rep confirmed the baby news to Us Weekly on Friday. A day earlier, the magazine notes, she was photographed sporting a baby bump.

This will be the second child for Hannigan, 37, and husband Alexis Denisof, who married in 2003. They are already parents to daughter Satyana, 2.