Lady Gaga, Robert De Niro, Kim Kardashian And More Celebrities Make Cameos On First "Tonight Show With Jimmy Fallon" (VIDEO)

Jimmy Fallon revealed on his first night hosting "The Tonight Show" that he has a pal who owes him $100 because the friend bet he'd never become the host of the talk show and on cue Robert De Niro appeared onstage and offered him $100.


There were then a number of celebrities who gave $100, including Mariah Carey, Lady Gaga, Kim Kardashian, Tina Fey, Rudy Guiliani, Mike Tyson, Tracy Morgan, Seth Rogen, Joe Namath, Lindsay Lohan, Joan Rivers,  Sarah Jessica Parker and Stephen Colbert, who dumped 1,000 pennies on Fallon, 39, and said: "Welcome to 11:30, b** h!"


Check out the entertaining video below…



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