Kylie and Kendall Jenner never miss a chance to wear tight, sexy, and slightly revealing clothes. Especially when Haley Bieber is hosting the party.

I for one think plunging necklines, leather pants, and racy cutouts are good for society. It has led to a situation where anything goes, sartorially speaking. Celebrity stylist Kat Taipaldos once said of the naked dressing trend in a conversation with Haley Rusavage of Marie Claire magazine Especially in Western and American culture, it's very 'shameful' to be naked. It's really exciting to be able to feel really proud of your body in public.” Amen, Sister

On Wednesday, October 23, Kendall and Kylie supported best friend Hailey Bieber at the launch party for the latest addition to Rohde Skincare: Barrier Butter, a moisture-locking balm meant to serve as the last step in your routine. (Barrier Butter is a moisture-locking balm meant to serve as the last step in your routine. And yes, it is really improving the appearance of my fine lines and wrinkles during this dry, extremely cold fall.)

Kendall Jenner showed up to the party at Funke restaurant in Beverly Hills in a black strapless bandage top reminiscent of Y2K's Herve Leger's happier days. Whether her tube top is accurate remains to be seen, but it was certainly reminiscent of the one Tom Ford designed for Yves Saint Laurent's Spring 2001 collection. The model, who recently showed off her rich-girl-inspired blonde hair, wore The Row's Bourse Clutch Bag and a black leather belt with gold hardware. The matching black leather shoes are squared-off, slightly pointed toes reminiscent of a sold-out pair from The Row, but Jeffrey Campbell sells boots in a very similar shape for under $200. Nails are also naked.

Kylie Jenner left the venue wearing a black sleeveless top tucked into high-waisted leather pants, pointy black heels, and Otra sunglasses with a big smile on her face. On her short square nails, she carried a vintage Gucci mink mini bag. Luckily, there are still some available for purchase if you are so inclined.

Partygoers included Bieber himself, as well as Bella Hadid, Devon Lee Carlson, Claudia Schiffer, Lori Harvey, and Stassie Kalanikolaou. Isn't it nice to see all your favorite It girls in one place?