barneys new york shopping coat money Christina Aguilera

What a good grandfather!

Fausto Aguilera got to spend time with Xtina and Jordan Bratman's little bundle of joy on Sunday - he took grandson Max to Barneys in Beverly Hills and let little M play with the elevator buttons! (Take a peek inside our gallery for more pix of the duo...)

Thankfully Christina Aguilera's boy is a bit too young to understand the complexities of divorce. And good to know he has a supportive family by his side no matter what!