Kendall and sister Kylie роsе in very rаcу minidrеssеs during surprise performance

Kendall and sister Kylie роsе in very rаcу minidrеssеs during surprise performance

Kendall and Kylie Jenner showed off their figures in tight dresses during a surprise appearance at Marquee Las Vegas’ Summer Kickoff event.

Kylie slipped her curves into a skintight red PVC dress, while Kendall opted for a strapless black mini dress.

Taking to Instagram, the sisters — Kendall, 28, and Kylie, 26 — shared various outtakes from the soirée as they promoted Kylie’s Sprinter beverage and Kendall’s 818 Tequila.

The sisters — whose nephew Psalm turned five this week — posed up for photos and videos during the celebratory occasion.

It comes after the supermodel insisted that there’s never been a sibling rivalry over ‘who’s prettier.’

The family members were photo-ready as they delighted unsuspecting fans who were partying at the pool and bar.

Kylie put on a busty display in her dress, which was low-cut and featured spaghetti-thin straps.

She complemented the sexy number with a pair of nude, backless heels with perspex straps.

The mother-of-two’s bouncy brunette locks were arranged in a center part and fluffy barrel curls.

And the makeup mogul’s visage was beautifully made up, with her cheeks blushed, and her pout coated in a mauve lipstick with darker liner.

For her part, Kendall wowed in a layered, straight-cut top and matching teeny skirt.

She punctuated the simple and sophisticated outfit with strappy black heels.

The runway regular wore her dark hair loose, also style in a middle part as it flowed down her back.