Kylie & Kendall Jenner celebrate NYE with friends Hailey Bieber and Stassie Karanikolaou in Aspen  

Kylie and Kendall Jenner enjoyed New Year’s celebrations in Aspen, Colorado with their friends Hailey Bieber and Stassie Karanikolaou.

The billionaire cosmetics mogul, 25, shared outtakes from the night, posting her older sister, 27, and her friends, 26 and 25 respectively, on her Instagram page.

All four women went all out as they coordinated in stunning black ensembles for the momentous occasion.

Holiday: Kylie and Kendall Jenner enjoyed New Year's celebrations in Aspen, Colorado with their friends Hailey Bieber and Stassie Karanikolaou

The billionaire cosmetics mogul, 25, shared outtakes from the night, posting her older sister, 27, and her friends, 26 and 25 respectively, on her Instagram page.

Holiday: Kylie and Kendall Jenner enjoyed New Year’s celebrations in Aspen, Colorado with their friends Hailey Bieber and Stassie Karanikolaou

Sizzling: Hailey turned heads in an LBD with sexy back cutouts

Sizzling: Hailey turned heads in an LBD with sexy back cutouts

Kylie turned heads in a plunging black bodysuit that accentuated her perky cleavage with its plunging front slit.

The standout look featured a small eyelet pattern throughout, which sparkled her skin as it hugged her curves.

The edgy reality TV personality slipped her feet into pointy black heels with a slight sheen.

She added a luxurious onyx black fur coat and covered her hands with black leather gloves.

Hot!  Kylie turned heads in a plunging black bodysuit that accentuated her perky cleavage with her plunging front.

Hot! Kylie turned heads in a plunging black bodysuit that accentuated her perky cleavage with her plunging front.

Engaging his 376 million followers on the photo-sharing platform, he simply wrote in a caption: ‘NYE’.

Taking her Stories, she shared the spotlight with her loved ones, posting clips of Kendall, Hailey, and Stassi separately.

Jenner, a mother of two adorable boys with boyfriend Travis Scott, skipped a necklace but rocked huge diamond earrings.

She pulled her lustrous dark hair back into a sleek, sexy updo that had a wet look and was parted on the side.

Eye-Catching: Her standout look featured a tiny eyelet pattern throughout, which sparkled her skin while hugging her curves.

Eye-Catching: Her standout look featured a tiny eyelet pattern throughout, which sparkled her skin while hugging her curves.

On Fire: The trendy reality TV personality slipped her feet into black pointy heels with a slight sheen

On Fire: The trendy reality TV personality slipped her feet into black pointy heels with a slight sheen

Kendall was less active on social media over the festive night, but did pop up to post to her Instagram Stories.

The glamorous model and founder of 818 Tequila was quite the sight in a skintight black jumpsuit and stockings.

She boldly skipped pants for dinner as she put on a leggy display in slightly sheer black pantyhose.

The beauty sported a sleek dark manicure and let her rich brown hair fall over her chest with a center parting.

Appearance: Kendall was less active on social media over the holiday night, but did pop up to post to her Instagram Stories

Appearance: Kendall was less active on social media over the holiday night, but did pop up to post to her Instagram Stories

For her part, Hailey looked ultra sexy in a revealing little black dress with very thin straps and a low, straight neckline.

Ms. Bieber exposed her toned midriff in the look, as well as her back, as the dress featured a mock thong design.

Her light brown locks were brushed back with a precise center parting and pulled back into a loose bun with a flirty lock left in the front.

Golden hoop earrings dangled from the Rhode skincare founder’s ears and she wore a lightly made-up face.

Hot Stuff: Hailey was ultra-sexy in a revealing little black dress with spaghetti straps and a low, straight neckline.

Hot Stuff: Hailey was ultra-sexy in a revealing little black dress with spaghetti straps and a low, straight neckline.

Stassi enhanced her sex appeal in a satin dress that fell almost to her navel.

She accessorized the look with a statement necklace that was multi-layered with different lengths and charms.

The influencer took a sip of a drink while flirting with the camera during friends’ dinner.

Gorgeous: Stassi played up her sex appeal in a satin number that plunged almost to her navel

She accessorized the look with a statement necklace that was multi-layered with different lengths and charms.

Gorgeous: Stassi played up her sex appeal in a satin number that plunged almost to her navel