Singer Billie Eilish, who is known for her baggy t-shirts and trousers, is sick of being slut-shamed over "big b**bs" and calls it "stupid".

The 17-year-old went viral on social media back in June, when she was photographed climbing off her tour bus wearing a tank top to greet fans outside.

"My b**bs were trending on Twitter! At number one! What is that?! Every outlet wrote about my b**bs," the "Bad Guy" hitmaker told the October issue of Elle US magazine, reports aceshowbiz.com.

She added: "I was born with f**king b**bs, bro. I was born with DNA that was gonna give me big-a*s b**bs."

Eilish went on to share her breasts have always been an issue, even with her close friends.

"I was recently FaceTiming a close friend of mine who's a dude, and I was wearing a tank top. He was like, 'Ugh, put a shirt on!' And I said, 'I have a shirt on'," she continued. "Someone with smaller boobs could wear a tank top, and I could put on that exact tank top and get slut-shamed because my boobs are big. That is stupid."

"It's the same shirt! It makes me mad. I have to wear a big shirt for you not to feel uncomfortable about my b**bs," Eilish said.