Madonna's Brits performance when she fell
Madonna's Prince tribute
Britneys's VMA 07 performance
Adele's Grammy 2016 performance
Katy's Unconditionally performance in the UK
Rihanna's Work live at the brits, when I was singing it at school people brought it up and we're talking about how terrible it is and how Beyonce is better ( ) . The fact that we're not even in the U.K. but multiple people had seen and hated it
Madonna's Brits performance when she fell
Madonna's Prince tribute
Britneys's VMA 07 performance
Adele's Grammy 2016 performance
Katy's Unconditionally performance in the UK
Poor Adele, Madonna, Katy and Britney, how will they recover?
Taylor's Grammy Performance with Stevie Nicks, although technically she used the criticisms of that performance as an inspiration for her 2010 hit "Mean" (from the blockbuster album Speak Now that sold 1M US units first week even after the performance) which went on to win a Grammy so, it wasn't exactly career damaging.
) . The fact that we're not even in the U.K. but multiple people had seen and hated it 
Need to re-watch it now, thanks 
Before her arrival the performance was nice.