Gwen Stefani [1] was the picture of rocker cool while leaving a nail salon with her eldest son, Kingston Rossdale, in LA on Monday. The singer sported a pair of denim overalls and cat-eye sunglasses while also showing off colorblock black and purple hair and her signature red lipstick. Gwen debuted the edgy new hairstyle on Instagram [2] over the weekend before hitting the stage with No Doubt at Riot Fest in Chicago; she posted a series of snaps from their performance and revealed that she even took some classic Chicago deep dish pizza home with her [3].

Gwen has been staying busy with work since announcing her split from husband Gavin Rossdale [4] last month. In addition to touring with No Doubt, she's back as a judge on The Voice, which recently kicked off its ninth season. Gwen has also been spotted out and about in LA looking smiley and happy [5] while spending time with her three sons [6]. Keep reading to see photos from Gwen's latest outing.