Emma Bunton's sprained ankle has forced the Spice Girls to cancel their appearance on Strictly Come Dancing.
The singer slipped on stage in Las Vegas and is walking with crutches so James Blunt will stand in for the act during Saturday's programme.
Bunton said her injury would not stop her performing at the first gig of the group's UK tour, also on Saturday.
"I'm seeing David Beckham's doctor," the 31-year-old explained, "so I'm praying I'll be fine."
She went on: "I actually slipped over the other night on stage, which was embarrassing."
Bunton - aka Baby Spice - was performing with the Spice Girls at the Mandalay Bay Hotel on Tuesday when she had her mishap.
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The singer, who had a baby boy in August, had to be helped on to her plane from Los Angeles back to the UK on Wednesday night.
The airliner, a Virgin Atlantic Boeing 747, was renamed Spice One in the group's honour.
More than 33,000 fans reportedly helped Bunton, Geri Halliwell, Melanie Brown, Melanie Chisholm and Victoria Beckham choose the name from a shortlist of three.
Spice One won the internet poll with 56% of the vote, beating Girl Power and Spice Girl.
The Spice Girls are due to perform at the O2 arena in London on Saturday - the first UK date in a world tour that began in Vancouver in Canada on 2 December.
The group have three nights at the venue this month before returning there for 14 further dates in January.
Last year, Emma Bunton reached the semi-finals of Strictly Come Dancing with partner Darren Bennett.
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