Gwen Stefani jeans tank zuma kingston no doubt sunglasses nirvana car shots Gwen Stefani jeans tank zuma kingston no doubt sunglasses nirvana car shots

While the rest of us are melting in the 90 degree heat, Gwen Stefani looks amazing as always!

Gwen and her sons Kingston and Zuma were spotted out and about on Tuesday afternoon, and we love that the singer is rocking a Nirvana tee! Hubby Gavin Rossdale is on tour in Europe until the end of August, so not only is Gwen on solo mommy duty, but she's also going to be quite busy preparing for the release of No Doubt's latest album, Push and Shove.

On Sunday Gwen hosted First Lady Michelle Obama as a special guest at her house for a luncheon, and other famous faces in attendance included Nicole Richie, Joel Madden and Alyson Hannigan. Click here to read all about it on CelebrityStreetStyle.com -- and more importantly, to see what Gwen wore!