Mariah Carey and Miley Cyrus will both appear on Simon Cowell's charity single for victims of the recent earthquake in Haiti.
The two US singers are the latest stars to join the already impressive line-up, which includes Cheryl Cole, Leona Lewis, JLS and Alexandra Burke.
The song, a cover or Everybody Hurts by REM, is being produced by Steve Robson.
"We're getting there. We have had an incredible amount of support,” Simon Cowell told The Sun, which is co-organising the release.
"It's amazing these great singers are clearing their schedules to make this happen.”
It is hoped that the song can be released as soon as possible after recording is completed.
All proceeds from the charity single will go to The Sun's Helping Haiti fund and the official Disasters Emergency Committee.
Meanwhile, celebrities from stage and screen united on Friday for the Hope For Haiti Now telethon, which raised $57million.
Stars Pledge Support for Devasted Haiti
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