Alyson Hannigan is gearing up to be a mommy of two – but she may have accidentally blown the baby gender secret this time around!

She appeared on the Rachael Ray Show this past Friday to promote her new movie American Reunion when she mistakenly spilled the beans that she is expecting a baby girl.

Hannigan was talking about her pregnancy when she mentioned that the baby, due this June, is always moving around when she’s trying to go to sleep.  “The other night, she — this, you know,” she got out before she realized her mistake and tried to cover it up with a laugh, telling Rachael Ray, “I feel like a popcorn popper!”

This will be Hannigan’s second daughter with husband, Alexis Denisof.  Their daughter Satyana recently turned three-years-old and is very excited to be a big sister!