What was Billie Eilish made for? Apparently, to get tattoos.

The "Bad Guy" singer recently added to her body art collection, unveiling a massive line design on her neck and back.

In one image shared in an Instagram photo dump on Oct. 18, Billie laid topless across a tattoo table with what looked to be intricate wood grain inked along the length of her spine. Another photo showed the tat peeking out from under her tank top as she cuddled with her dog Shark on a couch.

Billie previously teased her new ink, posting a photo of black lines inked on the back of her neck in September. At the time, she tagged tattoo artist Matias Milan, who specializes in large-scale designs.

Her new tat joins several others, including the word "Eilish" that she got inked on her chest the day after sweeping the 2020 Grammys by winning Record of the Year, Album of the Year, Song of the Year and Best New Artist. She also has a large dragon on her upper right thigh—which she first debut on a 2021 cover of British Vogue—and fairies tatted on her left hand. 

"I love tattoos," she told Vanity Fair in 2021. "No, I'm not going to be all tatted up, but I have some more ideas. Right now, I feel pretty satisfied. I feel like in a good zone with them." 

However, her mom Maggie Baird's feelings about them has been a different story.

"My mom has her hands on her head," she quipped at the time. "Rude, mom! Be supportive."

As Billie explained, "My mom hates tattoos."

But tattoos are only a part of Billie's signature look. To see her most memorable outfits, keep reading.

For the 2020 Academy Awards, Billie wore head-to-toe Chanel with a beautiful quilted jacket and matching trousers. Lightly decorated with sporadic Chanel logos, the singer finished the look with black and white sneakers and matching gloves. 

Combining a few of her signature themes for 2020, Billie sported accents of lime green under an oversized Gucci ensemble for the 62nd Grammy Awards. Unique to the look is her patterned mask and long green fingernails.

Anything but ordinary, the "Lovely" singer really stood out at the 2019 American Music Awards wearing Burberry's iconic tartan with a hood of sparkling gems covering her face. Down to a matching pair of plaid shoes, Billie came through looking regal and modern!

All designer everything. Billie sported a rainbow Louis Vuitton outfit to promote the launch of her Billie Eilish Experience presented by Spotify in 2019. The full coverage extended to a matching bucket hat and face covering—duh!

For Radio 1's Big Weekend in 2019, Billie rocked her go-to shirt and short combo in lime green, but this time, it was decorated with different artistic renditions of her name. Paired perfectly with combat boots and shades, Billie brought the house down.

Billie opted for a classic white tee with an oversized jersey and matching shorts for the Austin City Limits Festival at Zilker Park in 2019. Paired with a thick silver chain and details of her signature light green, Billie owned this chic 'fit.

On her way to the Vanity Fair after-party at the 92nd Academy Awards, the singer stopped to strike a pose in an all-black Gucci ensemble with lace details under an oversized black t-shirt and pant set. If the matching shades don't say it all, her pose certainly does.

At the 2020 Billboard Music Awards, the 19-year-old opted for a monochromatic, brocade two-piece by Gucci—matching bucket hat and face mask to boot!

Making more of a playful, light-hearted nod to childhood nostalgia, Billie wore the three iconic Powerpuff Girl characters on a vest and matching pants to the 36th annual ASCAP Pop Music Awards. 

Who ever said a track suit could be boring? Billie attended the Universal Music Group's 2020 Grammy after-party in an incredible Gucci track suit with an iconic pair of sneakers and bold sunglasses to match. If that's not enough, her green nails added a finishing touch.

For the Glastonbury Festival in 2019, Billie wore an ensemble from Stella McCartney's Yellow Submarine-inspired collection. Making a reference to the 1968 Beatles cartoon film, the Blue Meanies are music-hating beings, so they are perfect for concert attire.

In September 2019, the singer stepped out in New York City wearing her signature, neon green color from head to toe. Completely matching the roots of her hairstyle, Billie styles herself with intention. 

In 2019, Billie attended the iHeartRadio Music Awards sporting an all black ensemble with two depictions of the lead character from Sailor Moon. Pairing the look with several layered cross necklaces and black, chunky sneakers, Billie owned the runway.

While performing at the American Music Awards in 2019, Billie sang a rendition of her hit song "all the good girls go to hell" while sporting a black matching t-shirt and short set covered in red, sparkling flames. The only thing hotter than her translucent sunglasses featured up top is her fire tune. 

Billie transcended time and space in this lime green look at the CBS Radio We Can Survive concert in 2019. Even with an injury, Billie knows how to give a performance!

To attend the Brit Awards in 2020, Billie aptly picked this Burberry look, a nod to the U.K.-based fashion house. To complete the look, the singer wore a translucent plastic hood in the shape of a bonnet.

Billie opened the 2020 iHeartRadio ALTer EGO concert in an oversized Lil B shirt. Sporting mismatched sneakers and her signature space buns, the singer brought the energy and the look!

Before she was "The Bad Guy," she attended the film premiere of Everything Everything in 2017. Sporting a bold yellow t-shirt and some similar camo pants, Billie did anything but blend in.

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