Andrew Keegan is a dad! The 10 Things I Hate About You actor and his girlfriend, Arista Ilona, welcomed a baby girl named Aiya Rose on Tuesday, Us Weekly reports. According to a statement from Andrew's rep, the actor said, "My beloved partner and I are overjoyed to welcome a healthy baby girl into our world. Our hearts are full of love, and we are thrilled to embrace our role as her parents." The couple previously announced their pregnancy in October of last year; this marks their first child together. Congratulations to the new parents!