'Call My Name' singer must promote new track and film in London.
The 28-year-old 'Call My Name' singer - who is an ambassador for the beauty brand - needs to be back in the UK in time for the premiere of her new film 'What To Expect When You're Expecting'.
The former 'The X Factor' panelist who makes a cameo appearance in the comedy motion picture is also required in London to rehearse for her performance on 'The Voice' next Saturday (26.05.12).
A source told the Mirror: ''It's hectic for Cheryl at the moment, launching her comeback single, Call My Name, which happens to coincide with the release of the film. But she planned to go to Cannes a while back, along with the other L'Oreal spokeswomen.
''Her visit is being timed with military precision. She is jetting in, attending a party and leaving in the time it takes most people to unpack. The cost is astronomical but it's important Cheryl's there.''
The source added: ''She will fly in on a private jet, then dash to the event.
''She has a selection of outfits, worth around £10,000 all together, and a range of diamonds to wear.''