Britney Spears' much-anticipated 'Good Morning America' concert aired today, and according to PopCrush's review, it was a bit of a mixed bag.

At one point, Spears, who taped the concert on Sunday from the Bill Graham Civic Auditorium in San Francisco, CA, managed to forget the choreography to her number-one single 'Hold It Against Me.' Here's what PopCrush had to say about Britney's flub:

"As Britney started singing ‘Hold It Against Me,’ it quickly became clear that her performance was not what we were expecting. It is already a well-known fact that Britney mostly lip syncs onstage, and that she does this mainly because of her intricate dance performances. So naturally, we were really confused when Britney’s energy failed to match that of her up-tempo dance songs. At one point during the song, Spears even forgot the not-so-difficult choreography and looked lost next to her backup dancers."

For more info and video on Britney Spears' 'GMA' performance, head over to PopCrush.

Britney Spears Sings 'Hold It Against Me'