Celebrities are at their happiest when they're being pampered, heading to showbiz parties and even getting invitations to the royal wedding of the year!
But these celebs are swapping their comfy beds and luxuries for run-ins with deadly creatures in Africa, all to raise money for Comic Relief.
For this year's challenge, the team have just one week to trek across the Kaisut desert in northern Kenya.
Leah's got the story...
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