The couple — who have been dating since late 2015 — attended the ACMs together on Sunday in Las Vegas.
Shelton was spotted in the audience with his arm around Stefani, who looked stunning in a plunging, short red dress and her blonde hair worn super straight. The duo also sang and bopped along to Maren Morris’ performance of “Rich.”
Later in the night, Stefani was seen singing along as Shelton performed his latest hit “I Lived It.” After his performance, the former Voice coach jumped out of her seat to give her boyfriend a standing ovation.
Stefani also posed solo for photos backstage and showed off her red-hot outfit, which was topped off with a pair of thigh-high boots.
Be sure to check out PEOPLE’s full ACM Awards coverage to get the latest news on country’s big night.
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