Christina Aguilera

Awww, they grow up so fast -- it was just about a year ago (Jan. 12th to be exact) that baby Max was born and now he's celebrating his very first Hanukkah!

Xtina (who's still rocking Lilo's leggings) beamed as she showed off her little boy on the first night of the Jewish festival of lights.

Max is one lucky kid -- he gets to celebrate both holidays, and with a mom like Christina, you just know she goes overboard on the gifts!