Aspen, Colorado - The hottest stars rang in New Year's Eve in style - and together!

Famous sisters Kendall and Kylie Jenner rang in the New Year in style – and with each other.

In their Instagram stories, the two were seen with friends, including Hailey Bieber and Anastasia Karanikolaou, at a NYE party, reportedly in Aspen.

The sisters were dressed in black, skin-tight bodysuits, and rocked the night away at a dinner and then doing a bit of karaoke.

Elon Musk Elon Musk outlines plans for sweeping cuts as Trump's "efficiency" czar

In a video shared online, Kylie could be seen grabbing the mic and singing, "It's coming, it's coming, yeah," while bursting out into laughter. Hailey shared a photo of herself on the mic, too.

The Biebz's wife continued her recent trend of revealing fashion by wearing a black cutout dress for the occasion with a "Happy New Year" crown, while Kylie sported a sheer black bodysuit and matching fur coat. Kendall wore a black leotard with tights, and pointed-toe booties.

But it was Hailey's look that was perhaps the most daring of the bunch – which is saying a lot, as the sisters' looks were both sheer. The Rhode founder's little black dress gave the illusion of a thong in the back, with stomach cutouts on the front as well, showing off her toned tummy.

These models definitely know how to get the new year off to a great start!