Gwen Stefani blonde denim son school gavin rossdale torn denim

Only Gwen Stefani could look this good dropping her kid off at school!

On Tuesday the 43-year-old No Doubt rocker was snapped with four-year-old Zuma, and we're guessing her youngest son is thrilled for classes to end! Plus, his birthday is in late August, so that's right around the corner...

And speaking of birthdays, over the weekend Gwen and hubby Gavin Rossdale took their boys to Jessica Alba's house for her daughter Honor's 5th b-day celebration. Who knew those famous moms were BFFs?