She's one cool mom! Gwen Stefani took two of her sons, Zuma and Apollo, out for a fun-filled day at the Los Angeles Zoo on Friday afternoon -- and it looks like all three had a blast!

Despite her sunny disposition, the pale-skinned mama donned a dark and stormy ensemble, consisting of a black sweater, black jeans and bright white shoes. The 45-year-old kept that porcelain skin of hers out of the sun with a black striped baseball cap.

Zuma pushed his 11-month-old brother in his stroller, as the wee one looked pleased as punch to be spending the day outside.

Umm next time she goes to the zoo, can we come too?!