Billie Eilish wears an X-rated illusion t-shirt and brown spandex shorts to the gym in Los Angeles

Billie Eilish drew attention on her way to the gym when she wore an adult T-shirt with a photo of bare breasts on Friday morning in Los Angeles, California.

Striking leggy in a pair of dark brown spandex shorts, the Bad Guy hitmaker, 21, turned heads in her bold tee, which she paired with white trainers.

For her workout, the seven-time Grammy winner wore her brunette tresses pulled back in a low ponytail under a black baseball cap.

Double take: Billie Eilish drew attention on her way to the gym on Friday morning in Los Angeles, California, when she rocked an X-rated shirt with a photo of bare breasts on it

She carried a blue Stanley Cup drinking glass to keep her hydrated, as well as the rest of her essentials in a backpack.

Last year, during an interview with Zane Lowe on Apple Music 1, the performer revealed that she’s made fitness a priority in her life after recovering from an ankle injury.

“I’ve completely changed the way my life involves fitness — I’m a gym rat now,” she gushed.

Whimsical t-shirt: Showing off leggy in a pair of dark brown spandex shorts, the Bad Guy hitmaker, 21, turned heads in her bold t-shirt, which she paired with white trainers

Eye-catching: For her workout, the seven-time Grammy winner wore her brunette tresses pulled back in a low ponytail under a black baseball cap

She continued: “When did this happen? I don’t know but it did and it started with ‘I can’t hurt myself anymore.’ I won’t let myself live like this because I’ve lived like this for years.’

The time in the gym has made her “feel so much better as a person” and “can move on stage.”

“I feel so much better,” she gushed, having previously struggled with body image issues in her teens.

Fitness Rat: She carried a blue Stanley Cup tumbler to keep her hydrated, as well as the rest of her essentials in a backpack

During an interview with Vogue magazine, Eilish revealed that she struggled with body confidence and “hated herself” as she tried to accept her looks.

As the party’s crooner opened up about her struggle, she revealed that she had to learn to love herself, starting with accepting her physical appearance.

Billie said: “I’m going through my teenage years hating myself and all that stupid shit. A lot of it came from my anger at my body and how angry I was at how much pain it caused me and what I lost because of the things that happened to it…

Gym rat: Last year, the performer revealed she’s made fitness a priority in her life during an interview with Zane Lowe on Apple Music 1 after recovering from an ankle injury

“I’ve completely changed the way my life involves fitness — I’m a gym rat now,” she gushed in September

“I felt like my body was lighting me with gas for years. I had to go through a process of being, my body is actually me. And it’s not out to get me.’

In 2021, the singer admitted she was still not happy with her looks, telling The Guardian: “I see people online who look like I’ve never looked before. And right away I’m like, “Oh my god, what do they look like?”

“I know the ins and outs of this industry and I know what people actually use in photos and I actually know what looks real can be fake.

“Even so, I still look at it and I’m like, oh god, this really pisses me off. And I mean, I’m very confident in who I am and I’m very happy with my life… I’m obviously not happy with my body, but who is?