Done!
I'm picturing the baby with...horns...or something, and Mom being like, "What?? And I didn't even fool around this time!" *cackles*
Anyway, sure, why not! It would be boring if everybodies looked exactly the same, like little cardboard cut-outs!
Welcome to the family!
(Also, depending on the ages your characters wind up with, it's possible another youngling could be squeezed in...so, you know, there's that!)