The 26-year-old Firework singer is up for album of the year, best pop vocal performance, best female pop vocal performance, and best pop collaboration with vocals. She said she called the British comedian straight away to share the news.
'I called my hubby and he said, 'Well done!'' she told Access Hollywood. 'This year seems like it's going to be a big year and it's a nice way to finish the year too. I am so blessed.
'It's exciting, I'm really happy.'
And following her stint of Victoria's Secret show, she said she's got more inspiration than ever for a kooky outfit for the ceremony.
'Those costumes really inspired me,' she said. 'I'm not talking necessarily about the bikinis, but all the elaborate, wonderful, beautiful angel's wings, so maybe we'll be thinking along those terms.'