The singer - who turns 28 today, Thursday - has kept a low profile since her shock departure from the US X Factor, but was photographed at the US embassy staff in London yesterday, complete with visa papers and a brand new hairdo.
And according to The Mirror, Cheryl had been hoping to debut her new look at her birthday bash tomorrow night.
'Cheryl wants Friday to be her big return to the limelight, and she will be making a dramatic entrance,' said the insider.
'Her dress is all sorted, and she's had her hair done especially. She's in a great place, finally, and is ready to let her new hair down.
'Cheryl will put her credit card behind the bar – around £40,000 worth of champagne and spirits will be flowing through the night.
'She hasn't had a drink in nearly three months and will be going for it on Friday. She'll be the first on the dance floor and one of the last to leave. She really can't wait and is determined to show people she's happy and over the X Factor fiasco.
'Friday night is very much a case of out with the old and in with the new.”