Billie Eilish is well-known for making surprisingly innovative and cool music, alongside her notoriously crazy image. No item is too brightly colored, explicitly branded, or oversized for the singer and she certainly isn't one to shy away from a head-turning ensemble.

But, the star has stepped out looking very, well, un-Billie Eilish.

Keep scrolling to see the pictures.

Aged just seventeen, Billie Eilish has taken the music industry by storm.

She's been writing and creating her own music since she was incredibly young, and has risen to fame with huge hit album When We Fall Asleep, Where Do We Go? earlier this year.

She's also known for being something of a quirky character.

Eilish was home-schooled and didn't really interact with kids her own age apart from her siblings until she started to make waves in the music scene. This gives her something of a unique outlook on the world.

It also gives her music quite a different sound.

Many are pretty shocked that such a young person could create such hauntingly catchy tunes - and such suggestive lyrics.

Her debut album, When We All Fall Asleep, Where Do We Go?, ranked at number 1 on the charts.

Most artists have to release a couple of albums and dedicate their lives to promoting their work before they are even recognized as an artist, but then there’s a lucky few, like Billie, who reach superstardom on their first attempt. When the album was released, she wrote: “This album [means] the world to me please take care of it."

But that wasn't even the first time that we saw her climbing the charts...

Her introductory EP, Don’t Smile at Me, went all the way to slot fourteen, and has already been awarded gold, an achievement that many artists can only dream of receiving.

The teen has collaborated with the likes of R&B singer, Khalid, which exposed her to a whole new demographic.

And that only helped her fanbase grow stronger. The seventeen-year-old singer is well-known for her catchy beats and dark lyrics. Despite being so young, it seems as if she has already cemented her position within the music industry.

But, it's safe to say, Eilish is as famous for her image as she is for her music.

She doesn't dress like your typical seventeen-year-old-girl, that's for sure.

Eilish is known for rocking some pretty out-there looks.

Like this full white suit complete with Powerpuff Girl embroidery, which she pairs with some signature tiny sunglasses. Weird - but it kind of works?

Or what about this full green ensemble?

We have to say, love it or hate it, you can't deny Eilish's commitment to her look - and that's not something many of us are brave enough to pull off.

But because of Eilish's mature music and fashion sense...

It can be way too easy to forget the star was born in December 2001.

Making the singer just seventeen years old.

We know, it's hard to believe. And boy, does it make us feel like we're underachieving. Though there is a downside. Eilish recently revealed the real reason why she dresses the way she does - read all about it at the end.

Eilish doesn't just experiment with fashion..

The star is no stranger to getting creative with her hair - opting for more out there looks and colors to fit her quirky aesthetic.

She donned silver hair for some time.

If anything, it was this look that became her trademark around 2017.

She then swapped it for pastel blue...

Once again, this was another style that she held for some time.

She's also been partial to a darker blue too...

Just like her fashion sense, her hair is never boring.

More recently, she changed up her locks for something more head-turning.

The singer has been sporting neon green roots. It's certainly a statement.

But this week, the singer stepped out looking quite different.

Her new look has been shocking fans because it's so, well, normal.

For her new music video for "Xanny," the star donned a very un-Eilish look.

She swapped her baggy streetwear and neon green roots for an oatmeal turtle kneck and plain old brown hair.

The makeunder was seemingly her own idea.

The star revealed on Instagram that she directed the music video herself.

Check out her brand new look below:

via: Instagram

It's quite the change, isn't it? Recently, the star revealed the reason why she dresses the way she does and it's pretty shocking. Keep scrolling to learn more.