Millie Bobby Brown's jaw-dropping style evolution

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Millie Bobby Brown was 12 when TV show Stranger Things first hit our screens in 2016.

Today, as season four is about to premiere (Netflix, May 27) she's 18 and a fully fledged fashionista.

The British actress has gone big in the style stakes while promoting the upcoming season of the hit show.

Millie Bobby Brown on the red carpet for the first season of Stranger Things when she was 12, wearing a cream princess dress with gold tennis shoes; on The Tonight Show starring Jimmy Fallon wearing purple shiny leggings, high heels and a purple velvet top with feathered neckline; and in a white and black tight evening dress with thigh split at the premiere of season 4 of Stranger Things
Millie Bobby Brown on the red carpet for the first season of Stranger Things when she was 12; on The Tonight Show Starring Jimmy Fallon; and at the premiere of season 4 of Stranger Things. Photo: Getty

She debuted her blonde hair on The Tonight Show Starring Jimmy Fallon in a monochrome purple outfit by designer Raisa Vanessa.

The off-the-shoulder top was adorned with feathers and sparkles, and she also wore high-waisted pants, and big platform heels.

On the red carpet a few nights later, Millie showed up in a stunning custom white one-shouldered Louis Vuitton gown, with a shaped corset, belt and black tulle.

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During the evening, she gave fans hints of what to expect from the show.

"This is the most emotional season for Eleven," she said.

"She's powerless and trying to fit in at a new school and she's trying to understand who she is and where she came from.

"She's struggling with her identity and this is the darkest state she's ever been in.

"She's sad and I had to cry a lot."

In real life, Millie couldn't look happier.

Boyfriend Jake Bongiovi, son of Jon Bon Jovi, was her date for the event.

The pair couldn't keep their eyes off each other, and wrapped their arms round each other to happily pose for photos.

Millie Bobby Brown in white and black evening dress with long blonde hair and Jake Bongiovi in black suit and white polo shirt pose before a blue wall.
Millie and her boyfriend Jake Bongiovi. Photo: STAR MAX

If you love Millie's monochrome looks, here's how to re-create them:

Dazie, This Is It One Shoulder Knit Midi Dress, $59.99 from The Iconic

Get the one-shouldered glam look with this stretch knit cut-out dress.

It has a bodycon fit, a cutaway waist, and a side split.

A blonde model wears an off the shoulder cutaway white dress, standing against a white curtain. Dazie, This Is It One Shoulder Knit Midi Dress, $59.99 from The Iconic

By Johnny One Shoulder Grace Full Length Dress, $390, from The Iconic

Go sleek and sophisticated in this chic one-shouldered dress.

It's fitted, falls to the ankle, and has a high split on one side.

A model wears a white By Johnny, One Shoulder Grace Full Length Dress, $390 against a pale background with strappy high heels.

SHEIN Solid Off Shoulder Feather Trim Top, $15.95

If you love the feathered top Millie wore to chat to Jimmy Fallon, you can get the look in black.

This cotton top has a slight stretch and a seriously glam touch to the neckline.

a model is shown wearing a black SHEIN Solid Off Shoulder Feather Trim Top, $15.95 over pink pants.

Boohoo Feather Strappy Wide Leg Jumpsuit, $70

Millie's purple monochrome ensemble was separates, but this jumpsuit gives the same effect.

It has faux feathers round the neckline, a wide leg and spaghetti straps to finish the look.

a model is shown wearing a pink Boohoo Feather Strappy Wide Leg Jumpsuit, $70

Public Desire Primrose platform heel sandals, $60, from ASOS

Millie finished off her purple look with some impressive patent platforms.

You can get the look with these super high, open-toe shoes.

They have a platform sole, a high block heel, and adjustable ankle strap.

A model's feet shown wearing black Public Desire Primrose platform heel sandals, $60, from ASOS

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