Kylie Jenner Shows Off Her Hourglass Shape in Body-Hugging Nude Gown: Pictures

Sexy — and demure! Kylie Jenner worked her hourglass body in a figure-flattering and elegant nude dress at the Clara Lionel Foundation's 2nd Annual Diamond Ball on Thursday, Dec. 10, in Santa Monica, Calif.

PHOTOS: Inside Kylie's $2.7 Million Mansion

The Keeping Up With the Kardashians star, 18, wowed in the flesh-toned August Getty Atelier evening gown, which boasted satin straps, a cinched waist, and a pleated train. Mermaid waves, blushed cheeks, and a rose-hued lip completed the ensemble.

Kylie JennerKylie Jenner showed off her hourglass shape in a nude gown with a long train at the 2nd Annual Diamond Ball on Thursday, Dec. 10, in Santa Monica, Calif. Jason Kempin/Getty

And she wasn't alone! Jenner posed for pictures with friend Justine Skye, who complemented her amethyst tresses with a metallic lavender dress. The Kylie Lip Kit creator later posted one of those shots to her Instagram account, though she opted to leave the snap caption-free.

Justine Skye and Kylie Jenner strike a pose at the 2nd Annual Diamond Ball on Thursday, Dec. 10.Justine Skye and Kylie Jenner Paul Archuleta/Getty

PHOTOS: Holiday Gift Guide 2015 - For the Ladies

Jenner also shared a split photo that showed off the back of her dress, which she cheekily captioned with a wide-eyed emoji.

The Diamond Ball was hosted by the Clara Lionel Foundation, which was founded by Rihanna in 2012. The annual event helps to raise money for the foundation's grants fund, which supports health, education, and the arts globally.

(Wardrobe credit: Design Lab tank and Rachel Zoe pants, provided by Lord & Taylor)

Be a trendsetter! Sign up now for the Us Weekly Style & Beauty newsletter to get celeb fashion, beauty tips, and more delivered directly to your inbox.

Us Weekly Latest Videos