The people behind Britain's Got Talent are hoping singer Susan Boyle will be well enough to perform at a show in Manchester on Monday evening.
Susan, runner-up on the TV show, pulled out of two live performances in Manchester on Sunday because she needed to rest.
Other stars from the show did appear, but the audience were offered a refund. However only five people asked for one.
Some people are worried about how Susan is coping with her sudden rise to fame.
Susan recently spent a few days at a clinic in London because she was getting stressed.
She's thought to be recording an album which should be released later this year.