Gwen Stefani zoo stroller skirt hat sweater kids zuma kingston

Gwen is one hot stroller mamma!

The gorgeous No Doubt singer took little Kingston and Zuma to the zoo Sunday, with a pal and a nanny in tow for some extra help.

The adorable boys had a blast visiting all the animals, but they especially loved the elephants (click through our pics to see the kids checking them out).

Gwen Stefani zoo stroller skirt hat sweater kids zuma kingston

At the end of the day, the boys were tuckered out --but luckily, they got a mini police escort to speed them right though the crowds. It's good to be a Stefani-Rossdale!

Find out what hit TV show let fashion-forward designer Stefani play guest-stylist, after the jump ...