Big Brother gave the Loose Women star a lonely gnome called Norman to look after in the house and she was told that she couldn't let any harm come to him.
However, she was unaware that Martin Kemp and MC Harvey had been given a different challenge to steal the gnome without Coleen or the other housemates knowing.
The duo completed their mission and Coleen has been punished by being given a gnome costume and a fishing rod. She must stand by the pool with her rod until further notice.
This evening, a third celebrity will be evicted from Celebrity Big Brother. Danica Thrall, Rhian Sugden, The Situation and Samantha Brick face the public vote.
Celebrity Big Brother continues every night on Channel 5.
Celebrity Big Brother - Pictures from the house:
Copyright: Channel 5