The Australian pop star admits impersonators did a better job
the pop diva belted out her hits include 'Fighter' and 'Dirrty'
the late night talk show host blames it on a drunken mistake
the late show host parodies Nat King Cole's 'L-O-V-E'
Laverne Cox, George Taki and more tweet disapproval
GLAAD is also urging its social media followers to join the campaign
'Late Late Show' host James Corden gave heartfelt tribute to victims
