The 39-year-old revealed last year that she had been diagnosed with breast cancer.
Payne admitted he put the bill on someone else's room because he had been pouring drinks for his whole team.
Pop star Liam Payne speaks exclusively to Yahoo about his latest fund-raising efforts.
The Girls Aloud singer won the show but revealed she had a minor panic attack in her first dress rehearsal.
The 36-year-old singer recently revealed she would like to have two more children and is seeking sperm donors from abroad.