"How I Met Your Mother" actress, Alyson Hannigan, just welcomed a baby girl to the world! Alyson and her husband, Alexis Denisof, are overjoyed with their new daughter Keeva Jane. Keeva is now little sister to 3 year old, Satyana. Alyson's rep said, "They are all doing well." And we couldn't be happier for this adorable family of four. Congratulations to Alyson, Alexis, Satyana, and little Keeva! (usweekly)