Kim Kardashian and Kendall Jenner in Las Vegas.Photo:David Becker/Getty

David Becker/Getty
Another day, another style slay for the Kardashian-Jenner crew.
Kim KardashianandKendall Jennerboth turned up the heat — Vegas style — for a night out celebrating the grand opening of theFontainebleau Las VegasandJustin Timberlakeconcert.
For their evening in Sin City, the sister duo both chose all-black looks, starting with complementary sexy dresses. Jenner wore a floor-length halter slipdress with a plunging neckline, structured bodice and flirty hem, while Kardashian picked a floor-length figure-hugging knit dress. Her garment clung to all her curves and showed hints of skin, also dipping down just low enough to give a tease of cleavage. It is Vegas, after all!
Kim Kardashian in Las Vegas.David Becker/Getty

While Jenner, 28, went jewelry-less for the night, Kardashian, 43, amped up her look with a few pieces, including a silver necklace and some rings. Jenner did carry a matching black bag, though to dress up her look. Kardashian only had her phone and her ticket in hand (apparently leaving hergiant $110K Birkin at homefor this trip).
For glam, both sisters went the same route: long hair down and flowing with soft makeup and a nude, natural lip color.
Kendall Jenner in Las Vegas.David Becker/Getty

Timberlake headlinedthe invite-only — and very star-studded — event. The Grammy winner performed a set of his hits to a crowd that includedCher,Tom BradyandLenny Kravitz.
Jessica Bielwas also in attendance and was her husband’s biggest supporter during the set as she applauded, sang along and danced while Timberlake cycled through some of his most-loved songs.
He opened the set with “SexyBack” and went on to sing “Like I Love You,” “Rock Your Body,” “Señorita,” “Suit and Tie” and “Cry Me a River.” He concluded the show with “Mirrors.”
Justin Timberlake performing, as shown in Kim Kardashian’s Instagram Story.Kim Kardashian/Instagram

Kim Kardashian/Instagram
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source: people.com