Billie Eilish and Devon Lee Carlson in Los Angeles on Oct. 29, 2023.Photo:ALEXJR / BACKGRID

Billie Eilish and Devon Lee Carlson

ALEXJR / BACKGRID

Billie Eilishis having a rootin’, tootin’ good Halloween!

The 21-year-old singer nailed the spooky season with a fun cowgirl costume for this year’s celebrations and was photographed in her get-up as she attendedKendall Jenner’s Halloween party at the Chateau Marmont on Saturday.

The singer, who was at the party with her friend, Devon Lee Carlson, wore a red wig, cowboy hat and had a faux shotgun and gun belt, to give her costume an extra dash of the wild wild West. Eilish’s fun look also included a blue-and-white gingham blouse, brown pants and a brown belt.

As well as partying alongside the likes ofChanning TatumandZoë Kravitz,Megan Foxand Machine Gun Kelly, Eilish shared a fun videoon her Instagram Storythat appeared to be taken on her way home from the bash.

“When u start getting nauseous in the car with two bitches with emetophobia,” she wrote in the caption, adding “ruh roh.”

According tothe Cleveland Clinic, emetophobia is “is the fear of vomit or vomiting.”

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Last year,Eilish’s Halloween costumewas an eyebrow-raising nod to the age gap between her andthen-boyfriend Jesse Rutherford. (A rep confirmed their split to PEOPLE in May.)

Eilish recently made headlines afterdebuting a massive back tattooon social media. She had previouslyteasedthe oversized ink, but on Oct. 18 she revealed the full artwork.

The photo appeared to be taken during the tattooing process just after the outline of the black ink was done. (In the earlier photo she shared, the tattoo was entirely filled-in.)

source: people.com