Long before boho chic made its triumphant return to the runways at Isabel Marant, Rabanne, and Chloé, there was Sienna Miller, who single-handedly reinvented the look in the early 2000s.

Chappell Roan ensured all eyes were on her as she arrived at Valentino's star-studded Paris Fashion Week show on Sunday. The songstress, 27, whose real name is Kayleigh Rose Amstutz, stunned in ...