"Crazy how deeply in love you can fall with someone you just met," the CSI: Cyber star shared of his new baby girl.
Emilia joins older sisters Olivia and Annabel Leah and older brother Joshua. Van Der Beek, 39, shared the happy news that he and his wife were expecting baby No. 4 back in November, via an adorable Instagram shot.
Just a week ago, the actor posted an Instagram pic of Joshua, wishing his son a happy birthday with a super sweet message.
"Nothing like having a much-improved 2.0 version of yourself around to remind you just how much better you can be," Van Der Beek wrote. "Happy 4th birthday to my guy... As sensitive as he is strong, as soulful as he is playful... And the kid know how to time a jump for a picture #BirdsInTheBackground #HesANatural ? Love you beyond, bud."