The model was nominated alongside Frankie Dettori and married couple Heidi Montag and Spencer Pratt, and was eliminated after receiving the fewest number of votes from the public.
When the housemates were first contacted by host Brian Dowling, they heard the boos aimed at Paula, with the 51-year-old identifying a loud 'Get Paula Out' chant.
As she left the house, she sang to herself: "It's the story of my life," before donning a deerstalker and sunglasses.
Exiting the house to a huge chorus of boos, Paula began shouting "Good on ya! Good on ya!" at particularly vociferous members of the crowd.
Paula had been the bookies' favourite to leave the house first. She had threatened to leave the show after being nominated, saying it would "affect her career".
Celebrity Big Brother - latest pictures:
Copyright: Endemol Channel 5