Lady Gaga steps out in a Cousin It-style wig dress as she joins Cheryl Cole and Will.i.am in London

She's no shrinking violet: Lady Gaga wore this spectacular dress and hat made of hair to the HTC and Beats Audio party tonight

Easy does it: The global superstar is seen leaving her hotel before heading to the party

Dedicated followers: Gaga held a drawing of herself that appeared to have been given to her by one of the several waiting fans outside her hotel

You weren't born that way! Gaga almost looked like Cousin It from the Addams Family, but she probably didn't mind

Balancing act: The interesting headpiece looked like a giant hairy mushroom but didn't appear to faze the singer who walked like she was on a catwalk

A helping hand: Still wearing dark shade despite emerging at night time, Gaga held onto her minder as he led her to a waiting car

My little monsters are waiting: Gaga snarled and made a claw with her hand as she posed for the waiting cameras

Where is she? Several fans gathered at the Roundhouse to catch a glimpse of their idol

Party chic: Cheryl Cole looked stylish in this polka dot top over a pair of leather leggings which she matched with pointy heels. She uploaded her own pouting photo to Twitter

Friends: Will.i.am, who is Cheryl Cole's manager, tweeted this photo of him backstage with the axed X Factor judge, referring to her as 'Little Miss Tweety Bird'

She added her own full-length picture of her pouting, with the comment: 'I'll be rocking them BEATS! Yup yup yup yup!'

The lyrics are from the Black Eyed Peas song Boom Boom Pow.

Will.i.am also tweeted a photo of him with Dutch DJ Eva Simons, adding that the pair were 'rockin in London'.

Star-studded guest list: Will.i.am joined Dr Dre and music producer Jimmy Iovine as they partied into the night

Model Leah Weller, daughter of singer Paul Weller, also attended the bash, along with TV presenter Georgie Okell

Namesake: Dutch DJ Eva Simmons sported an interesting bag baring her name on it while food writer Gizzi Erskine played it safe

Earlier today he tried to dispel rumours the band was breaking up.

It may have had something to do with the Black Eyed Peas pulling out of the Michael Jackson tribute concert in Cardiff, just days before it is due to kick off.

He said: 'Why do people listen to rumors..."Me and @apl_de created the peas"...so...from the creators mouth...We are not breaking up...stop the rumors.'

Hot couples: Musician Freddy Page and his girlfriend and former Miss England Georgia Horsley and McFly guitarist Danny Jones