Rivers was crowned the winner of Trump's reality TV competition during a three-hour finale on Sunday.
She faced competition from a long list of celebrities on the program -- including country singer Clint Black, socialite Khloe Kardashian, TLC singer Tionne 'T-Boz' Watkins, former basketball star Dennis Rodman, comedian Tom Green and even her own daughter, Melissa.
Rivers insists she had no idea she had been chosen by Trump until he fired her opponent during filming.
She says, "You cannot read him. I did not know until he really said, 'Joan.' I absolutely didn't know... it's so intense."
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