The Kardashian/Jenner crew came out in full force to celebrate Kylie's milestone birthday

By Brittany Talarico
Updated August 10, 2015 01:40 PM

Kylie Jenner‘s 18th birthday will definitely be one to remember. Also memorable? All the sexy outfits her famous family wore to celebrate with her. The Kardasian/Jenner crew came out in full force to party with Kylie Sunday night at her Bootsy Bellows hosted event at The Nice Guy in Los Angeles. Let’s breakdown what everyone wore, shall we?

Courtesy Kim Kardashian

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Kim Kardashian West showed her dedication to sheer, cleavage-baring, non-maternity clothes, attending the party in a see-through turtleneck which exposed her bra. She paired the look with a second-skin midi skirt, black strappy shoes and a slicked back hairstyle. Kanye West went more causal in a pair of distressed jeans and a short-sleeve button down.

The birthday girl stunned in a glittering sheer-paneled Nicolas Jebran mini dress, and she transformed her tresses thanks to some blonde extensions. She also wore a sparkly black dress for the festivities, which included a family dinner and a major gifting moment from her boyfriend Tyga, 25.

Kendall Jenner showed off her abs and her supermodel legs thanks to an itty-bitty white House of CB bandeau top and mega side-slit skirt by LaQuan Smith. She accessorized with an oversize necklace and metallic Aquazzura heels.

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Matriarch Kris Jenner selected a black bustier top and cropped pants topped off with a sheer-paneled jacket. Caitlyn Jenner also wore all black, pairing her sleek midi dress with an edgy leather moto jacket, black strappy sandals, a Henri Bendel satchel and Y-shaped necklace by the brand, and a red lip.

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Kourtney and Khloé Kardashian continued the sheer-panel trend in two of the sexiest looks of the night — a black LaQuan Smith bodysuit with an illusion stomach on Kourtney and a tight black mini with peek-a-boo panels on Khloé. Both sisters have been spending a lot of time in the gym lately, and their hard work definitely shows. (We’re also giving Kourtney credit for introducing a new way to wear your body chain, in case you were looking for bodychain inspo.)

Kylie’s birthday festivities are far from over. On Aug. 16, she’s headed to Canada for another nightclub celebration. But we’re not sure anything will top the moment her Tyga gave her a white ferrari. (However, we might be more obsessed with her new Birkin bag.)

Whose party look is your favorite? Sound off below.

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–Brittany Talarico