Critics have been quick to jump on her blunder, but Fergie, who hit the stage with the Black Eyed Peas for the half-time show, has urged the media to back off - because performing at one of the world's most-watched sporting events is nerve-wracking enough.
Fergie says, "I did (feel for her) because, you know what, it's such a huge venue, your nerves just take a hold of you, so I completely understand. She's one of the best singers of our time, so nobody can take that away from her. You get nervous at these things; she's human!"
And Fergie has accepted criticism of her own vocals at the event in Arlington, Texas, adding, "Some of my notes were pitchy to me, but that was just over-excitement, I was nervous. But it's just exhilarating, the whole thing was so big. That's a once in a lifetime thing, it was just so exciting."