14+ Things You Should Probably Know About Billie Eilish

For someone with such a mature sound and deep lyrics that give off the impression of many years of life experience and wisdom, Billie is still just a teenager — wise beyond her years.

Recently, fans were noticing some of Billie's tics and confronted her about it. She responded by confirming that she was diagnosed with Tourette Syndrome as a child.

"I've just never wanted people to think of tourettes every time they think of me," she wrote on her Instagram story, adding, “I’ve taught myself ways of suppressing my tics and certain techniques to help [reduce] them when I don’t want to be distracting in certain situations. Wasn’t planning on talking about this on here maybe ever, but it’s gotten to a point.”

Like the stereotypical vegan, Billie never misses a chance to announce that she is one.

In several interviews over the last couple of years, she has revealed that she is not a supporter of any animal products.

You may recognize him from the role he played in the final season of Glee in 2015, Alistar.

He co-wrote and produced "Ocean Eyes", as well as Billie’s EP Don't Smile at Me in 2017, and her latest album When We All Fall Asleep, Where Do We Go?

Coming from a very musically inclined family, Billie and Finneas have constant access to a state-of-the-art home studio where they produce and record Billie's songs.

Her debut single "Ocean Eyes" was uploaded to SoundCloud back in 2015, solely for the purpose of sharing with her dance teacher. But somehow, became an overnight sensation, racking up millions of streams.

There is a reason for her interesting, unconventional, head-scratching style.

"I like to be judged, so I wanna see heads look up," she told ET

Dave Grohl, Foo Fighters frontman, praised Billie's sound, comparing her career's momentum to that of Nirvana.

“The same thing is happening with her that happened with Nirvana in 1991. People say, ‘Is rock dead?’ When I look at someone like Billie Eilish, rock and roll is not close to dead," he said.

“I think of myself as yellow because I think a lot of people used to maybe doubt yellow or not like it because it’s one of those colours that people just sort of hate. Nobody likes it and it’s such a good colour!," she said.

While many people thought the giant spider crawling into her mouth was a special effect, Billie proved to us that it was not!

"The spider crawling out of my mouth for 'you should see me in a crown' that was real. I could go through way less and just have everything CGI-ed," she revealed.

Although we know her as simply, "Billie Eilish", that is just her stage name — which doesn't differ that much from her real name: Billie Eilish Pirate Baird O'Connell.

"I've grown up with a dance background — that's kind of — really how I got into music," she said.

When she was 13 years old, during a hip-hop class, her hip suddenly "popped". It was her bones separating from her muscle.

Ouch.

She later revealed that The Walking Dead was the inspiration behind the song and that it was called "Fingers Crossed".