Girls Aloud toast Cheryl Cole"s 29th birthday in Sin City

What happens in Vegas…: Girls Aloud and will.i.am toast Cheryl Cole's 29th birthday in Sin City

|

UPDATED:

01:11 GMT, 1 July 2012

There are few things rowdier than a group of girlfriends let loose in Las Vegas for a naughty weekend away.

Some of the Girls Aloud have jetted to Sin City to help Cheryl Cole celebrate her 29th birthday in style.

Nicola Roberts has kept fans up to date on the girls' activities, from the moment she and Kimberley Walsh settled into their Upper Class cabin, to downing shots of tequila with the birthday girl.

Down in one: Cheryl Cole, Nicola Roberts and Kimberley Walsh drink shots of Patron tequila to toast Cheryl's 29th birthday in Las Vegas

Down in one: Cheryl Cole, Nicola Roberts and Kimberley Walsh drink shots of Patron tequila to toast Cheryl's 29th birthday in Las Vegas

Getting rowdy: Kimberley looked as though she was having a great time on the girls night out

Getting rowdy: Kimberley looked as though she was having a great time on the girls night out

The entire group enjoyed a meal together at an upmarket restaurant in the party town on Saturday, Cheryl's birthday.

Attendees donned masks bearing the singer's face, and their table was decorated with balloons for the occasion.

Nicola tweeted a picture of the group, who kept their identities shrouded behind the masks.

Shout out for Cheryl: The birthday girl partied at XS nightclub, where friend will.i.am was playing a DJ set

Shout out for Cheryl: The birthday girl partied at XS nightclub, where friend will.i.am was playing a DJ set

Tonight's gonna be a good night: Cheryl slipped behind the decks to dance

Tonight's gonna be a good night: Cheryl slipped behind the decks to dance

Cheryl had earlier written on her own Twitter page, 'Erm… few questions!! Who am I Where am I Why am I What am I'

She
could be forgiven for feeling a little bewildered, given that she was
spotted drinking shots of Patron tequila the evening before.

Roberts posted a picture of herself, Cheryl and Kimberley downing the drinks, captioning the picture simply 'PATRON'.

Sore head After their night out, the birthday girl appeared a little bewildered on Twitter

Sore head After their night out, the birthday girl appeared a little bewildered on Twitter

Whose birthday again Nicola also tweeted a picture of their table for dinner on Saturday, with everyone wearing Cheryl masks

Whose birthday again Nicola also tweeted a picture of their table for dinner on Saturday, with everyone wearing Cheryl masks

Despite the premium liquor, the trio had looks of disgust on their faces as they attempted to down them in one.

The girls were partying at XS nightclub, where will.i.am was playing a DJ set. Cheryl slipped behind the decks to dance while the Black Eyed Peas singer gave her a shout out.

Earlier in the day, Nicola tweeted a picture of Kimberley enjoying a cocktail in first class. It is unknown if Nicola indulged, after staying up all night so she didn't miss her flight when her filming schedule ran until 5.30am.

Flying in style: Nicola and Kimberley enjoyed a cocktail on their Upper Class flight to Vegas on Friday

Flying in style: Nicola and Kimberley enjoyed a cocktail on their Upper Class flight to Vegas on Friday