The 22-year-old beauty pageant veteran was on hand to support the singer, who hosted the annual awards show for the first time. Culpo and Jonas hit the red carpet as a couple, and the star managed to avoid a slime-covered hug from her beau later on in the ceremony.
"Leave room for SLIME @nickjonas #KCAs," she captioned a photo of the near-slime on Instagram. Jonas also shared the picture, writing, "#KCA @oliviaculpo you shouldn't have worn white."
Culpo and Jonas met at the Miss USA 2013 competition, which the singer co-hosted with Giuliana Rancic and Jeannie Mai. The couple started dating shortly after, and Jonas confirmed the relationship in a subsequent interview with Joan Rivers on Fashion Police.
Culpo won Miss USA 2012, but was forced to give up her crown in order to go on to win Miss Universe 2012. Jonas is best known as a member of former boy band the Jonas Brothers, and will star on new Ryan Murphy series Scream Queens on Fox.