Lily Allen up as PM Theresa May

It's traditionally the night that the ghouls come out and gore ensues as celebrities get in the spirit of trick or treating.

Leading the scary array of costumes for Halloween, Lily Allen kicked off festivities as she dressed up as a ghoulish Teresa May complete with grey wig and pearls.

Showcasing her transformation online, the 32-year-old songstress shared a terrifying snap of her with grey-coloured contacts and a navy pinstriped suit, captioned: 'Let me be completely clear. #strong #stable'.

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Getting political: Lily Allen kicked off festivities as she dressed up as a ghoulish Teresa May complete with grey wig and pearls

Getting political: Lily Allen kicked off festivities as she dressed up as a ghoulish Teresa May complete with grey wig and pearls

Later, she appeared on her Instagram story clad with a prosthetic nose equipped with fake warts while sitting in her car.

Writing alongside her bewitching look, she simply wrote: 'Trick or treat'.

Upping the ante for the spooky occasion, Georgia May Jagger, 25, took inspiration from historical figure Marie Antoinette, who was the last Queen of France before the French revolution.

The model accentuated her slender figure in a thigh-grazing lace look which opened to display a racy cream bustier with pearl detailing throughout.

Spooky: Upping the ante for the spooky occasion, Georgia May Jagger, 25, took inspiration from historical figure Marie Antoinette, who was the last Queen of France before the French revolution

Spooky: Upping the ante for the spooky occasion, Georgia May Jagger, 25, took inspiration from historical figure Marie Antoinette, who was the last Queen of France before the French revolution

Trick or treat: Later, she appeared on her Instagram story clad with a prosthetic nose equipped with fake warts while sitting in her car. Writing alongside her bewitching look, she simply wrote: 'Trick or treat'

Trick or treat: Later, she appeared on her Instagram story clad with a prosthetic nose equipped with fake warts while sitting in her car. Writing alongside her bewitching look, she simply wrote: 'Trick or treat'

Meow! While fellow British model Abbey Clancy, 31, took a walk on the wild side as she posed for a black and white selfie dressed as a cat

Meow! While fellow British model Abbey Clancy, 31, took a walk on the wild side as she posed for a black and white selfie dressed as a cat

Referencing the historical monarch's unfortunate demise at the guillotine, the daughter of Mick Jagger boasted fake blood around her neck as she posed for her selfie which was captioned: 'Let's celebrate death tonight'.

While fellow British model Abbey Clancy, 31, took a walk on the wild side as she posed for a black and white selfie dressed as a cat.

Wearing a pair of cat ears, she left her long blonde locks loose while sporting painted on whiskers across her face.

Picture perfect: Keith Lemon was sure to document his time at Jonathan Ross' annual Halloween bash with a number of terror-filled selfies alongside Holly Willoughby

Picture perfect: Keith Lemon was sure to document his time at Jonathan Ross' annual Halloween bash with a number of terror-filled selfies alongside Holly Willoughby

Devilishy handsome: In one photo, the Celebrity Juice presenter posed for a photo with his co-host Holly Willoughby, 36, who was dressed as a majestic unicorn complete with silver horn

Devilishy handsome: In one photo, the Celebrity Juice presenter posed for a photo with his co-host Holly Willoughby, 36, who was dressed as a majestic unicorn complete with silver horn

Camera ready: Dressed as Spike from Buffy the Vampire Slayer, he posed alongside actor Dexter Fletcher, who donned a costume fitting for the Pope

Camera ready: Dressed as Spike from Buffy the Vampire Slayer, he posed alongside actor Dexter Fletcher, who donned a costume fitting for the Pope

The GC: While he shared a hilarious photo with Alan Carr, 41, who was dressed as TOWIE star Gemma Collins

The GC: While he shared a hilarious photo with Alan Carr, 41, who was dressed as TOWIE star Gemma Collins

Meanwhile, Keith Lemon was sure to document his time at Jonathan Ross' annual Halloween bash with a number of terror-filled selfies.

In one photo, the Celebrity Juice presenter posed for a photo with his co-host Holly Willoughby, 36, who was dressed as a majestic unicorn complete with silver horn.

Dressed as Spike from Buffy the Vampire Slayer, he posed alongside actor Dexter Fletcher, 51, who donned a costume fitting for the Pope.

Eye-popping: Also stopping by the star-studded party was Nicole Scherzinger, 39, and put on an eye-popping display while dressed as Cleopatra

Eye-popping: Also stopping by the star-studded party was Nicole Scherzinger, 39, and put on an eye-popping display while dressed as Cleopatra

Dazzling: Nicole rocked a be-jewelled collar with the look, as well as a raven black wig in the style the Queen of Egypt was known for

Dazzling: Nicole rocked a be-jewelled collar with the look, as well as a raven black wig in the style the Queen of Egypt was known for

Sizzling: The Poison singer commanded attention with her glittering gold cape, as well as several gold bangles to add to the look. The X Factor judge rocked incredible eye makeup with the look, one of the things Cleopatra was known for

Sizzling: The Poison singer commanded attention with her glittering gold cape, as well as several gold bangles to add to the look. The X Factor judge rocked incredible eye makeup with the look, one of the things Cleopatra was known for

Going for gold: With exaggerated cat-eyes, gold eyeshadow and defined brows, Nicole's dark complexion glowed as she took photos at the party

Going for gold: With exaggerated cat-eyes, gold eyeshadow and defined brows, Nicole's dark complexion glowed as she took photos at the party

While he shared a hilarious photo with Alan Carr, 41, who was dressed as TOWIE star Gemma Collins.  

Also stopping by the star-studded party was Nicole Scherzinger, 39, and put on an eye-popping display while dressed as Cleopatra. 

Nicole rocked a be-jewelled collar with the look, as well as a raven black wig in the style the Queen of Egypt was known for.

The Poison singer commanded attention with her glittering gold cape, as well as several gold bangles to add to the look. 

Getting political: Comedian David Walliams, 46, opted to dress as North Korean leader Kim Jong-un

Getting political: Comedian David Walliams, 46, opted to dress as North Korean leader Kim Jong-un

Party people: He posed with fellow comedian Micheal McIntyre at the bash

Party people: He posed with fellow comedian Micheal McIntyre at the bash

Costume clad: He caught up with John Bishop, 50, and his wife Melanie

Costume clad: He caught up with John Bishop, 50, and his wife Melanie

Costume: He donned a black suit, complete with red lapel pins portraying previous rulers Kim Il-sung and Kim Jong-il while he appeared to sport prosthetics on his eyes and changed his skin tone, pictured alongside Alan Carr

Costume: He donned a black suit, complete with red lapel pins portraying previous rulers Kim Il-sung and Kim Jong-il while he appeared to

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