Forget the trick... she's all about the treat! Busty Gemma Arterton wows in backless negligee-style dress for Halloween ball

PUBLISHED: 20:39, 31 October 2013 | UPDATED: 20:53, 31 October 2013

Vampire, nurse and zombie bride are all popular choices when it comes to Halloween outfits for women.

But Gemma Arterton opted to keep things simple as she attended The UNICEF Halloween Ball at One Mayfair in London on Thursday night.

Instead of a tacky fancy dress option, Gemma wowed in a stunning backless negligee-dress as she made a stylish appearance at the annual event.

What a treat! Gemma Arterton wowed in a plunging negligee-style dress for the UNICEF Halloween Ball at One Mayfair on Thursday night

Dressed to impress: Gemma showed off her curves in the dress, which featured lace detailing along the neckline

The 27-year-old actress showed off her enviable curves in the black gown, which clung to her figure in all the right places.

Adding something of a spooky twist to her look, Gemma teamed the dress with a smoky silver eye, which gave her overall ensemble an ethereal quality.

Gemma looked calm and collected as she posed up on the red carpet at the charity bash, after admitting in an interview earlier this year that she credits her mother Sally-Anne for giving her confidence to do anything with her life.

Ethereal touch: Gemma added a silver smoky eye to her complete ensemble

Spooktacular! Gemma's dress was much more eye-catching than some of the other tacky fancy dress items around

Famous friends: Gemma was seen deep in conversation with actor James Nesbitt inside the bash

She told The Sun: 'I have to thank my mother for giving me confidence. She brought up me and my sister on her own and never talked about any problems. I really appreciate how one woman could work hard and be a great mum at the same time.

'My mum Sally worked at two jobs, as a cleaner and seamstress ... I am no campaigning feminist, but just seeing her set an example makes me convinced that women can do anything so long as they have belief in themselves.

'Her ability to look after and protect my sister and myself made us always feel optimistic about life. It allowed me to make decisions, both good and bad, and not feel restricted.'

Ballerina chic: Jemima Khan took inspiration from Black Swan for her tutu-skirt and corset

Skinny minnie: Jemima showed off her slim figure in the all-black ensemble

The big reveal: Jemima later removed her feather-trimmed cardigan to reveal her figure

Fancy seeing you here! Jemima's ex Hugh Grant was also at the bash in a cat mask

Gemma wasn't the only familiar face to make an appearance at the UNICEF ball, which was to raise vital funds for UNICEF's work for children affected by the current Syria crisis.

Jemima Khan went for more of a fancy dress approach to her outfit, wearing a black tutu-style ensemble, for which she appeared to have taken inspiration from Oscar-winning movie Black Swan.

The 39-year-old socialite, who recently split from comedian Russell Brand, showed off her slim legs in the short skirt and corset, which she teamed with a feather-trimmed cardigan.

Figure-hugging: Meg Mathews opted for a super-tight black strapless dress

Skeleton bride: Jodie Kidd went all out in her ghoulish ensemble

Didn't fancy dressing up? Sophie Dahl wore a black jumper dress and ankle boots for the evening out

Completing her look, Jemima opted for winged eye make-up like Natalie Portman's character in the film, and wore her brunette hair up in a loose ponytail.

Coincidentally also present at the bash was Jemima's ex Hugh Grant, who arrived at a similar time, and kept his spooky look simple by pairing his suit with a frilly cat mask.

Meg Mathews showed off her slim figure at the event in a tight black PVC strapless dress, which she teamed with ankle-strap heels and her blonde hair slicked back into a high ponytail.