A long way from Harry Potter! Bonnie Wright goes for grown-up glamour in sexy satin LBD as she joins her boyfriend and other stars for nightclub celebration

PUBLISHED: 01:48, 8 February 2015 | UPDATED: 06:11, 8 February 2015

She rose to fame as one of the young stars in the Harry Potter movies.

But Bonnie Wright has well and truly grown up into a beautiful young woman, and one with impeccable style at that.

The 23-year-old actress cut a stunning figure as she attended popular nightclub The Box for its fourth birthday celebrations in London on Saturday evening.

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From Ginny Weasley to drop-dead gorgeous: Bonnie Wright wowed in a satin LBD as she celebrated The Box nightclub's fourth birthday in London on Saturday

For the star-studded bash, the actress – who played Ginny Weasley in the hit movie franchise - donned a slinky little black dress in a satin fabric, flashing a glimpse of her shoulders and legs.

The garment resembled a sultry night-slip, but she pulled it off with ease, adding height to her slender frame with a pair of stylish strappy black sandals.

The flame-haired beauty kept the rest of her ensemble simple, with just a bangle on one wrist, while wearing her hair down in a glossy, low-maintenance ‘do.

Bonnie complemented her dark look and striking hair colour with a fetching slick of scarlet on her lips, pulling her simple but effective look together.

Matching: The 23-year-old cut a ravishing figure in her little black number, while her friend - former Made In Chelsea star Amber Atherton - also went for head-to-peep-toe black

Good spirits: The friends were having a great time at the popular London nightspot in their racy ensembles

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Loved-up: Bonnie, 23, spent time with her boyfriend Simon Hammerstein, 35, the owner of the club

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She spent the evening with her pal, former Made In Chelsea star Amber Atherton, who also opted for a head-to-toe black ensemble.

The ex-reality TV star and jewellery designer opted for a sheer lace top, revealing her bra underneath, and an A-line skirt with a sheer panel across the mid-section of her thighs, upping the ante even more.

And of course, Bonnie was also seen getting cosy with her boyfriend Simon Hammerstein, 35, owner of The Box: he kept hold of his gorgeous girlfriend as they posed for a snap together.

Funny details: Bonnie also caught up with model and DJ Zara Martin, who sported a fun silky top with hand prints over her chest

Flashing a bit of leg: Jewellery designer Amber managed to show off a fair amount of skin in her sheer ensemble

A long way from Downton Abbey! Actress Laura Carmichael looked a delight in her blouse and leather mini skirt

Stunning sisters: The Downton Abbey actress took her striking sister Olivia along for the evening

Also at the star-studded party, hosted in partnership with Belvedere Vodka, was Downton Abbey favourite Laura Carmichael, who looked a million miles away from her on-screen alter-ego, the relatively dowdy Lady Edith.

The blonde actress went for a more smart-casual look for the occasion, teaming a printed blouse – unbuttoned to reveal a glimpse of her cleavage – with a leather mini skirt.

With her tresses blown out into an easy, breezy straight style, she added to her look – like Bonnie – with a timeless ravishing red lipstick.

She posed at the party with her sister Olivia, who stood out from the crowd with her fiery auburn locks on display.

Avert your eyes! Jonathan Ross got friendly with a model dressed in a latex bodysuit

And, pose! Amber also got up close with one of the eccentric-looking models at the bash

Canine addition: Laura Whitmore kept her ensemble fun with a Snoopy handbag

Jonathan Ross was another attendee at the popular nightclub’s birthday soiree, and he appeared to have caught the attention of a model who was glad in an utterly jaw-dropping latex bodysuit with a mesh detail over her chest and torso, as well as stockings and suspenders.

The TV funnyman kept his eyes up as he posed with the gorgeous guest, keeping a smile on his face.

TV presenter Laura Whitmore looked immaculate as always, sporting a white blouse and a black jacket with a furry detail, and ripped black skinny jeans.

She injected some humour into her Saturday night style with a fun Snoopy handbag worn over her shoulder.

Meanwhile, the entertainment was provided by model and DJ Zara Martin, who looked quirky in a top with hand details over her breasts as she danced up a storm behind the decks with pal Jade Williams.