Kaia Gerber rings in 21st birthday with pals Billie Eilish, Paris Jackson and Madison Beer in LA

Kaia Gerber couldn’t stop smiling as she celebrated her 21st birthday with friends over the weekend in LA.

Cindy Crawford’s mini-me supermodel daughter was joined by friends Billie Eilish, Paris Jackson, and Madison Beer for the occasion.

The American Horror Story star enjoyed a meal and cake at the city’s trendy eatery Off Sunset on Saturday night.

Happy girl: Kaia Gerber couldn’t stop smiling as she celebrated her 21st birthday with friends over the weekend in LA

Kaia looked typically gorgeous with her lustrous brunette locks styled in a subtle side part and blown out into voluminous perfection.

Her wispy, bouncy strands rested on her collarbone as she casually tucked one side behind her ear. 

The striking beauty enjoyed the company of her friends in a chic and clinging, sleeveless, one-shoulder black top.

The fashionista, who often takes style cues from her mom’s signature 90s looks, wore a single silver-toned necklace with a small pendant. 

It girl hair: Kaia looked typically gorgeous with her lustrous brunette locks styled in a subtle side part and blown out into voluminous perfection

The look: The striking beauty enjoyed the company of her friends in a chic and clinging, sleeveless, one-shoulder black top

It girl hair: Kaia looked typically gorgeous with her lustrous brunette locks styled in a subtle side part and blown out into voluminous perfection

Make a wish! Kaia blew out the candles on a slice of decadent chocolate cake

Make a wish! Kaia blew out the candles on a slice of decadent chocolate cake

On the scene: The American Horror Story star enjoyed a meal and cake at LA's trendy eatery Off Sunset

On the scene: The American Horror Story star enjoyed a meal and cake at LA’s trendy eatery Off Sunset

Billie, 20, was dressed in style for the occasion, showing her individuality in a black mini skirt and chunky black boots.

The combat-style footwear had a small platform and laced up all the way to the music artist’s thighs.

The Wish You Were Gay singer teamed her bottom half with a form-fitting white shirt with vertical stripes.

It featured two lace-up panel details on either side of the front, leaving hanging string tassels.  

Billie Stylish: Billie was dressed in style for the momentous occasion, showing her individuality in a black mini skirt and chunky black boots

Billie Stylish: Billie was dressed in style for the momentous occasion, showing her individuality in a black mini skirt and chunky black boots

Edgy: The combat-style footwear had a small platform and laced up all the way to the music artist's thighs

Edgy: The combat-style footwear had a small platform and laced up all the way to the music artist’s thighs

She added more eye-catching elements to her ensemble with her jet black hair and a pair of light blue-tinted shades.

Her locks were cut into a shaggy, layered style with face-framing bangs and ironed straight as they dusted her chest.

The powerhouse entertainer wore various silver-toned rings and stacked several diamond necklaces.

An oversized black blazer topped her look as she wrapped up the night, and she carried a white ‘Cash Inside’ bag from streetwear brand Off-White.

Chic: Her locks were cut into a shaggy, layered style with face-framing bangs and ironed straight as they dusted her chest

Chic: Her locks were cut into a shaggy, layered style with face-framing bangs and ironed straight as they dusted her chest

Plus one: Paris, the daughter of the late Michael Jackson, brought a female companion to the soiree

Plus one: Paris, the daughter of the late Michael Jackson, brought a female companion to the soiree

Paris, the 24-year-old daughter of the late Michael Jackson, brought a female companion to the soiree.

She arrived in style, modeling a light brown mini slip dress with a very deep scoop neckline and thin spaghetti straps.

The singer’s tattoos were on fully display in the skin-baring outfit and her visage was mostly covered.

She wore a skin-toned face mask and large, dark, ombre-tinted, round sunglasses that hid her piercing eyes.

Go-to look: She arrived in style, modeling a light brown mini slip dress with a very deep scoop neckline and thin spaghetti straps

Go-to look: She arrived in style, modeling a light brown mini slip dress with a very deep scoop neckline and thin spaghetti straps

Her tousled blonde hair fell around her face in a long bob that was textured and piecey.

Jackson slung a dark handbag over her shoulder and punctuated her dress with deep brown suede boots with a bronze platform heel.

She stacked bangles on her wrist as she held the hand of her unknown female date.

Her counterpart was dressed in a low-slung, asymmetrical black skirt with a sheer black strapless top with structured boning. 

Splashy ride: Madison, 23, drove to the event in a white Range Rover with a beige leather interior

Splashy ride: Madison, 23, drove to the event in a white Range Rover with a beige leather interior

Madison, 23, kept her look casual as she arrived to the affair in a white tube top that showed a slither of her stomach.

She drove to the event in a white Range Rover with a beige leather interior, joined by a lady friend.

The singer-songwriter paired her crop top with loose-fitting, baggy trousers that were right on trend.

Fashion-forward: The singer-songwriter paired her crop top with loose-fitting, baggy trousers that were right on trend

Fashion-forward: The singer-songwriter paired her crop top with loose-fitting, baggy trousers that were right on trend

Her long and glossy dark hair was pulled back into a casual and fuss-free style, with long curtain-like pieces left out at the front.

She drew attention with large, chunky gold hoop earrings, which coordinated with her gold watch, necklace, and Chanel handbag with a gold chainlink strap.

Over a full face of flattering makeup, she sported a large pair of square-shaped, black-rimmed eyeglasses.

The young woman she was with wore a simple strapless black mini dress with black leather knee-high boots.

Accessory: Over a full face of flattering makeup, she sported a large pair of square-shaped, black-rimmed eyeglasses

Accessory: Over a full face of flattering makeup, she sported a large pair of square-shaped, black-rimmed eyeglasses

Both Kaia and Billie’s older brothers also turned up for the celebration, each showing up in their own unique styles.

Presley Gerber, a 23-year-old model, wore a black crewneck shirt and a black and white varsity jacket.

And Finneas, 25, rocked a light-colored sheer, embroidered button-up shirt with dark pants and shoes.

The brothers: Both Kaia and Billie's older brothers also turned up for the celebration, each showing up in their own unique styles

Style factor: Finneas, 25, rocked a light-colored sheer, embroidered button-up shirt with dark pants and shoes

The brothers: Both Kaia and Billie’s older brothers also turned up for the celebration, each showing up in their own unique styles

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