09/04/2011 12:07 pm ET Updated Dec 06, 2017

Alyson Hannigan Shoots Down Pregnancy Rumors

Is there another baby on the way for Alyson Hannigan?

A recent photo of the "How I Met Your Mother" and "American Reunion" star sporting what could be a baby bump had everyone wondering if the actress was expanding her family with husband -- and fellow "Buffy" alum -- Alexis Denisof.

So is Hannigan expecting?

Not right now, at least. The actress took to Twitter Sunday to shoot down the pregnancy rumors.

"NO, I'm not pregnant! I just ate too much carnival food, that time of the month, hurt my back & couldn't suck my gut in, & need 2 do cardio!," she wrote, adding, "And I'm NEVER gonna wear that shirt again!!!"

Hannigan and Denisof married in 2003 and they have a two-year-old daughter, Satyana.