The "Hello" singer tried to trick 'The Tonight Show' host.
The 'Hello' singer's competitive side came out in force on 'The Tonight Show.'
No, they have nothing to do with tripping on red carpets.
It turns out that tripping on the red carpet is far from the most embarrassing thing that ever happened to Lawrence while wearing an elegant gown.
The late night host proves he's the best person to call himself out.
The host returned to his Comedy Central show but tweeted that he couldn't "stand up."
The singers reinvented the classic on 'The Tonight Show' alongside Jimmy Fallon.
This might be the weirdest thing that Jimmy Fallon has gotten celebrities to agree to on his late-night show.
The Tonight Show host posted a throwback photo to Instagram of himself wearing a Halloween costume -- with an injured hand.
Some things never change.
The former NFL star and Live! With Kelly and Michael host shared this pic of his twin daughters, Sophia and Isabella, and their creative costumes on Twitter on Oct. 30.
The actress spilled the costume secret on 'The Tonight Show'.
No matter what, Sandra Bullock doesn't want to dress up at 'Slutty Batgirl.'
'The Voice' coaches took part in a game of 'Spin the Microphone' on 'The Tonight Show.'
