The No Doubt frontwoman highlighted her petite figure in a multicolored bikini and teeny One X Oneteaspoon cut-offs, pairing the barely-there pieces with a black-and-blue flannel shirt tied around her waist and a black "G" cap.
She completed the look with an assortment of accessories, including a bright-colored shawl, hoop earrings, choker necklace, beaded bracelets and a feather pendant.
The platinum blond beauty appears to be having a blast this summer. Over the past few months she's been spotted packing on the PDA with her boyfriend, Blake Shelton, fishing with her three kids -- sons Kingston, 11, Zuma, 8, and Apollo, 3 -- and soaking up the son while cruising around on a boat.
Hear highlights from her adventures in the video below.