A spokesperson for the 24-year-old singer confirmed to People that the star would not be performing at the event because she was unable to obtain a visa from the US.
"The singer has been invited to appear at the event on Sunday after receiving an amazing six nominations for the prestigious awards. Unfortunately, her application for a visa to enter the United States of America has been rejected at this time by the American Embassy in London," said Winehouse’s rep.
For the past two weeks, the singer has been in a detoxification centre, and will now concentrate on her recovery. The spokesperson added, "Amy has accepted the ruling and will be concentrating on her recovery."