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The cast of Stranger Things gathered in Brooklyn on Saturday, May 14, to celebrate their season 4 premiere, and these kids sure have grown up. Though the group walked the red carpet with youthful enthusiasm, they were dressed to the height of sophistication.

Here are some of the night's most notable looks from the ladies of the cast.

Brown looked stunning in a white bustier gown, custom Louis Vuitton, featuring a thigh-high slit in the skirt and sheer black tulle detail over one shoulder. The gown's waist was cinched with a silver and black belt.

She paired the dress with tall black open-toe heels and left her newly blonde hair fall down her shoulders. Brown's accessories included diamond earrings and several rings, and she chose subtle glam for makeup with some bronze shadow and coral lipstick.

Sink went with a chic modern look, wearing a custom Prada white suit with a slightly over-sized blazer and padded shoulders. Her auburn hair looked even more vibrant against the white fabric, pulled back into a sleek pony tail. She added some glimmering accessories for a touch more sparkle, including a diamond choker and numerous rings on her hands.

Under the flared hem of her slacks, Sink wore a pair of pointed white boots to match her suit.

In contrast to her co-stars, Hawke wore a black Christian Dior spaghetti strap black gown covered in red illustrations of bats, cats, and sparkling stars, which was very on theme for the evening.

She wore it with black boots and Tarot-decorated clutch, and left her coppery hair down in a loose bob.

Dyer also landed on black, wearing a Saint Laurent gown trimmed across the bodice and skirt with a wild explosion of feathers. The dress spoke for itself, so all Dyer wore for accessories were some small silver earrings and a few rings.

Similar to Sink, Ryder wore an oversized suit, this one being a black three-piece over a simple white shirt with the cuffs peeking out of her blazer's sleeves. Though she had no tie, she decorated her lapel with a pin of her own character on Stranger Things, Joyce Beyers.

With the suit she wore boots and carried a black leather purse with a chain strap. Ryder left her light brunette locks down brushing her shoulders.