Gwen Stefani [1] could not have looked happier after attending church in LA on Sunday. The singer flashed her megawatt smile while making a picture-perfect exit with her eldest sons, Kingston and Zuma. Gwen stunned in a floral-print ensemble nearly three weeks after she and Gavin Rossdale [2] announced their plans to divorce after 13 years of marriage [3] on Aug. 3. She previously made a glamorous appearance at church [4] on Aug. 9, during which her wedding ring was noticeably absent.