Paris Hilton Gave Kendall Jenner the Ultimate Compliment on Her Birthday Dress

A 21st birthday party calls for plenty of partying and, in Kendall Jenner's case, two jaw-dropping outfits. The supermodel headed out to dinner at Delilah with sisters Kylie, Khloé, and Kourtney, along with her best friend Hailey Baldwin, wearing a mosaic sheer Julien Macdonald jumpsuit with a crisscross neckline. Kendall turned up the glamour by accessorizing with a Charlotte Simone green fur stole, Harry Kotlar diamond earrings and a Noudar diamond choker.

While you might call that lavish, her Labourjoisie mini (which will retail at $9,000) definitely didn't take a back seat. Kendall made a quick change before heading to the club in Swarovski crystals. "I have always wanted to create a look for Kendall, I'm honored its for such a celebratory occasion," Kuwaiti designer Antoine Salameh said of the custom piece he collaborated on with Jenner's stylist, Monica Rose.

While the little number is certainly short, it took a whopping seven days to make, certifying this ensemble as Kendall's hottest yet. As Kendall suggested in her Instagram posts, the '70s-inspired shift certainly is "groovy," and it looks just like the one Paris Hilton wore to celebrate her own 21st in London. Paris confirmed her approval to Vogue:

Read on to check out the resemblance and see a behind-the-scenes shot of Kendall's design on the mannequin before she slipped it on, then shop inspired silhouettes.