Alyson Hannigan: "No, I'm Not Pregnant!"

American Pie star clarifies belly bump speculation via Twitter

False alarm!

After sporting a li'l chili belly bump over the weekend while out in Malibu with hubby Alexis Denisof and 2-year-old daughter Satyana, Alyson Hannigan sparked rumors she was expecting baby No.  2.

However, the How I Met Your Mother star took to her Twitter Sunday to clarify...

The actress tweeted: "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!"

The she quipped: "And I'm NEVER gonna wear that shirt again!!!"