Gwen Stefani: 'Happy Mother's Day, Muffins'

Gwen Stefani and Gavin Rossdale hold hands as they leave a birthday party with son Kingston on Saturday (May 12) in Los Angeles.

The 42-year-old No Doubt rocker and fashionista was also spotted out and about with the whole family on Sunday.

PHOTOS: Check out the latest pics of Gwen Stefani

Gwen tweeted a Mother’s Day greeting to some of her gal pals – “@GwynethPaltrow @aliciakeys @nicolerichie @victoriabeckham @kellywearstler happy mothers day muffins gx”

FYI: Gwen is wearing an Express jacket.

20+ pictures inside of Gwen Stefani and the whole family out enjoying the weather on Mother’s Day…