Happy birthday kiddo!
Hilary Duff and Luca were spotted going to some sort of class.
Maybe it was a birthday class because it was Luca's birthday yesterday!!!
Happy birthday to you, happy birthday to you, happy birthday dear Luca, happy birthday to youuuuuuuuuuuuuuuu!
Mama Duff must be so proud of her little boy - he's grown up so much in so little time!
Congratulations to the both of ya!!!
Check out MORE pictures (below) !!!
[Image via WENN.]