The Buffy the Vampire Slayer star, who welcomed Charlotte Grace with husband Freddie Prinze Jr. in September (09), turned 32 on 14 April (09).
She admits she was a little taken aback when doctors told her the sex of her child - because she was sure it was a boy.
Prinze tells People magazine, "We found out (we were having a girl) on my birthday actually. I was stunned, because for some reason I had been convinced she was going to be a boy. I said to Freddie, 'Thanks for the dress-up doll for my birthday!'
"As an only child raised by my mum, the mother-daughter bond is all I know. Now my mum comes over every Sunday morning, and to see the three generations of women, it's pretty spectacular."