The retro pattern joined Kylie Jenner at Coachella, Olivia Rodrigo during her Governors Ball performance, and Gracie Abrams ...

When you think of quintessential summer prints, polka dots and florals likely spring to mind. But this year, summer’s most popular pattern is even more apt: cue the postcard print.

Gwen Stefani's style has transformed a lot from her No Doubt days to her time with country singer Blake Shelton. Here's a full breakdown from 1989 to now.