Joining the ladies at the star-studded bash were Years and Years who dressed up as the Spice Girls and Jason Derulo.
Rita Ora and her X Factor girls also performed on the night.
Downing Street has been scrambling to get on the front foot on the issue since Monday when the leaked papers revealed Ian Cameron’s firm Blairmore Holdings avoided UK tax for years by operating out of the Bahamas.
On Monday, the Prime Minister’s official spokesman refused to comment on the issue, saying it was a ‘private matter’.
Downing Street issued four statements in 48 hours on the Prime Minister’s tax affairs as it tried to shut down the row about his late father’s dealings in tax havens.
Deputy Political Editor Jason Groves examines what they said – and what they left out. Asked if the Cameron family still had money in his late father’s offshore fund identified in the Panama Papers, the PM’s spokesman said: ‘That is a private matter.
Perrie Edwards totally nailed her Halloween look on Thursday night.
The Little Mix star and her bandmates dressed up as rockers Kiss , and Perrie's outfit and face paint looked so good it even caught the attention of Gene Simmons' handsome 26-year-old son Nick.
After seeing pictures of the four-piece in their skimpy outfits, Nick tweeted his dad a link to a picture of their fierce fancy dress looks.
"Hey pops I think she does it better @genesimmons," he wrote alongside it.
Gene then retweeted the post to his 754,000 followers much to Perrie's delight. " the blonde stunner wrote next to a screenshot of the tweet on Instagram.