Hot mama! Gwen Stefani stunned when she stepped out in a sheer scarlet dress at the Vanity Fair party following the 2016 Oscars on Sunday, February 28, in L.A.

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The No Doubt singer, 46, wore a barely there red dress by Yanina Couture (with a Jimmy Choo clutch) that showcased her toned legs and torso, while her boyfriend, Blake Shelton, 39, was dressed down in jeans, a black shirt and jacket for the exclusive bash at the Wallis Annenberg Center for the Performing Arts.

It capped off a busy couple of days for the lovebirds, who kicked off their weekend in Kansas City, Missouri, on Friday. Stefani flew into town to watch the country star in concert and was spotted holding up her phone as she captured images of her man in action in the packed Sprint Center arena.

On Saturday, the couple headed to Nashville to attend the wedding of country singer RaeLynn Woodward, who Shelton mentored on season 2 of The Voice.

Shelton and Stefani, whose rep confirmed exclusively to Us Weekly last November that the duo are dating, were inseparable at the nuptials, holding hands and putting their arms around each other as Woodward married longtime boyfriend Josh Davis.

As Us Weekly exclusively reported, Stefani is returning to The Voice this season to mentor Team Blake.

Stefani performed at the Vanity Fair party on Sunday night, singing hits including "Hollaback Girl" and her song about Shelton, "Make Me Like You."

In heaven! I know were cool @gwenstefani @vanityfair gwenstefani @kiehlsnyc

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All my favorite songs.. @gwenstefani #gwenstefani

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@vanityfair @gwenstefani I so needed this! #gwenstefani

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