A female reveler at Kylie Jenner's 21st birthday party has been rushed to hospital after being taken from the nightclub with blackened feet and bruises on her face.

The unidentified blonde woman was seen being wheeled out of West Hollywood restaurant and club Delilah strapped face down on a stretcher.

She was loaded into the back of an ambulance as Kylie's father Caitlyn Jenner and her partner Sophia Hutchinson looked on in horror.

A friend of Kylie Jenner was rushed to hospital from the socialite's 21st birthday party with blackened feet and bruises on her face

Kylie Jenner turned heads with a flattering magenta frock as she arrived at her party

Caitlyn looked extremely concerned in photos taken of the carnage on Thursday night, as Hutchinson spoke with security.

The party featured the entire Kardashian-Jenner clan going all out to celebrate the mega-rich reality TV star's coming of age.

Kylie splashed cash on a large ball pit, personalized party favors, a photo booth and even a family mural dedicated to the famous family and their friends.

Kylie had Delilah's outside walls covered in pink tinsel, while the ceilings were bedecked with glistening pink balls which later released pink confetti that showered down on dancing guests.

She was loaded into the back of an ambulance as Kylie's father Caitlyn Jenner and her partner Sophia Hutchinson looked on in horror

The unidentified blonde woman was seen being wheeled out of the West Hollywood restaurant and club strapped face down on a stretcher

Caitlyn looked extremely concerned in photos taken of the carnage on Thursday night, as Hutchinson spoke with security

When partygoers weren't busting moves on the dance floor, they were able to lark around in a gigantic ball pit filled with pink balls and elaborate love heart balloons.

Kim and Khloe Kardashian shared clips of themselves jumping around in the pit, which was surrounded by mirrors to ensure the glamorous guests were able to fix themselves up after messing around in the pen.

She also paid homage to her famous family by covering an entire bar wall with a mural dedicated to the tribe and their boyfriends, as well as her sisters' late father Robert Kardashian.

VIP guests including Nicki Minaj, Winnie Harlow, and Dave Chapelle all turned up to party with the birthday girl.

When party-goers weren't busting moves on the dance floor, they were able to lark around in a gigantic ball pit that was filled with pink balls and elaborate love heart balloons

Kylie ensured her outfit matched the theme as she dazzled in a glistening, skintight playsuit and skyscraper stilettos

The mother-of-one and beauty mogul looked incredible as she debuted her platinum blonde locks while wearing a magenta dress which had a cut-out detail on the waist.

Having given birth to baby Stormi in February, no doubt she was enjoying a rare night out on the town with her famous family, who dressed in brights to celebrate her special night.

Shoulder pads added a retro vibe to her look, while the asymmetrical hem showed off her perfectly sculpted legs.

Delicate magenta ballet-inspired stilettos added a few inches to her 5ft6in frame. Her blonde tresses were parted on the left and surgically combed back and down into a long ponytail.

Her second outfit of the night was a pink sequin strapless unitard which clung to her figure and she wore her locks tied up in a sleek ponytail.