For her performance with Adam Levine, the singer swapped her black jumpsuit for a red-hot gown.

As if Gwen Stefani didn't already glow on the Grammys red carpet in an Atelier Versace jumpsuit, the singer saved her evening's best ensemble for her performance with Adam Levine.

PHOTOS See The Complete Grammy Awards Red Carpet

Performing their new duet single, "My Heart Is Open," Stefani serenaded the crowd in a showstopping strapless gown with a high slit, also by the Italian luxury label. And of course, she completed the look with her signature red lip.

See THR's Complete Grammy Awards Coverage Here