The teen lipstick mogul joined Tyga for his Rawwest Alive Tour stop in San Francisco on Wednesday.
Cuddling up, the pair posed for a sweet selfie shared to the rapper's Instagram.
In the photo, Tyga stood in front of a mirror, lifting his pants to reveal his boxers. Jenner, 18, wrapped her arms around the 26-year-old from behind, resting her hands on Tyga's belt.
The fashion-forward reality star donned a camouflage jacket and perched her head on Tyga's shoulder.
"Wavybaby," Tyga wrote.
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The actor, who is performing songs from The Gold Album: 18th Dynasty, also shared photos from the tour ahead of the Regency Ballroom performance to social media.
"San Fran gon b lit tonight," he wrote.
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The couple recently spent a romantic Valentine's Day together in New York City, taking a helicopter ride around Manhattan.
Of the date, Jenner wrote, "perfect day."