The couple, who confirmed their relationship this spring, sat front row at the Alexander Wang show.
The reality star wore a form-fitting, thigh-length black dress with ankle-high platform shoes, while the rapper wore matching tan shirt and pants and accessorized with a gold grill.
That same night, Jenner, 18, and Tyga, 25, stepped out for a night on the town – in totally different outfits. He went comfy while she went sexy, in an ensemble that involved a revealing black leotard and skinny black pants. The leotard was hoisted above Jenner’s pants to show off her hips.
“There’s not much she could say since Kylie is an adult now,” the source said. “Kris actually supports their relationship big time.”