Ringing it in with some skin! Kylie Jenner celebrated her 18th birthday with a big bash on Sunday, Aug. 9, at The Nice Guy in L.A. But the birthday girl—who dazzled in a sparkling black mini—looked considerably demure, especially when compared to her older half-sisters, Kim, Khloe, and Kourtney Kardashian, who stormed the scene in steamy, body-baring ensembles.
PHOTOS: Kylie's style evolution
Let's start with Kim. On the arm of husband Kanye West, the soon-to-be second-time mom, 34, entered the Italian hot spot wearing a long, body-conscious skirt, topped by a completely sheer top. The tight fit and see-through shirt put her blossoming baby bump on display—not to mention her enhanced pregnancy cleavage.
PHOTOS: Kim's second pregnancy style
Meanwhile, Kourtney, 36, modeled a skintight jumpsuit with two giant cutouts that reached from right under her breasts all the way down to her hips. Attempting a bit of modesty, the mom of three, who split from longtime beau Scott Disick in July, topped the one-piece off with a crisp blazer.
Last but certainly not least, Khloe, 31, rocked her "revenge body" in a long-sleeved LBD with sheer, mesh panels. (All the better to show off those hard-earned muscles.) High-shine heels and a bedazzled clutch completed the ensemble.
PHOTOS: Khloe's sexy body evolution
Of course, those three ladies weren't the only family members to attend Kylie's epic fete. Her older sister, budding supermodel Kendall Jenner, arrived in a white crop top, teamed with a long skirt that boasted a dangerously high slit.
Not to be left out, mom Kris Jenner, who brought beau Corey Gamble as a date, donned a bustier top, legging-like pants, and a see-through blazer.
Which of the sisters do you think looked most skin-tastic? Vote in the poll above!
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This article originally appeared on Usmagazine.com: Kim Kardashian, Khloe, Kourtney Have a Battle for the Most Skin-Tastic Outfit at Kylie Jenner's 18th Birthday: Photos