Kendall Jenner's birthday dress took seven days to create.

Kendall Jenner (c) Instagram

Kendall Jenner (c) Instagram

The 21-year-old model, who celebrated her 21st birthday on Wednesday (02.11.16), adorned a show stopping slinky mini dress laden with Swarovski crystals to her party, which was custom made by Lebanese designer Antoine Salameh and took an entire week to complete.

The creative mastermind has admitted it was the "perfect party dress", and despite being encrusted with multiple precious gems it was "lightweight" and easy for Kendall to move in.

Speaking about the ensemble to WWD Online, Antoine - who has collaborated with Britney Spears and Mariah Carey on their outfits before - said: "[It was] the perfect party dress because it's very lightweight and easy to move in."

Although the 'Keeping Up With the Kardashians' star turned to the creative mastermind - who designs for the brand Labourjoisie - and stylist Monica Rose to craft the mesh garment, the catwalk icon knew exactly what she wanted to wear to celebrate her milestone with her friends and family at Delilah, in Los Angeles, California.

Antoine explained: "We went off of Kendall's '20s reference and we wanted to give her a modern take on it; like Kendall, the dress is timeless and chic. She sent over reference images and I took it from there. It's young, sexy and fun."

The television personality has taken to social media to reveal the inspiration behind the masterpiece was 'The Simple Life' star and socialite Paris Hilton.

Alongside a picture of the brunette beauty adorning the cowl-neck, spaghetti strap dress that is believed to cost $9,000, which she shared to her Instagram account, she wrote: "vintage Paris Hilton vibes. 21 21.(sic)."

Kendall also attended a private dinner at Catch in West Hollywood, California, to mark the special occasion, which saw her adorn yet another head-turning ensemble as she paired a sheer, black, reptile-printed all-in-one bodysuit from Julien Macdonald with a green Charlotte Simon fur shawl.