Mariah, 45, was rushed to hospital on Wednesday with a ‘severe’ case of the illness – but that didn’t stop her fulfilling her commitments.
The diva attended the Pier 1 Christmas Pop Up Storybook launch in New York on Tuesday evening, despite the fact she was suffering.
A source told PEOPLE: “She had fallen ill earlier in the day, but participated in the event last night as much as she could.”
Luckily a spokesperson for the mother-of-two has confirmed she is on the mend – just in time for all of the Christmas concerts she no doubt has booked.
The rep told the publication Mariah “had been feeling under the weather with the flu over the past few days and was fighting it to the best of her abilities.
“She is doing well now and will be performing as scheduled this weekend. She thanks her lambs [fans] for the continued support and well wishes.”
Apparently Christmas spirit is the best cure for the flu, as singer Mariah is already tweeting about decorating the house.