Katie and Samantha were shown the door during a live double eviction, meaning they have narrowly missed out on a place in their year's final.
Emma Willis, as usual, announced the news and there were gasps from the housemates.
Katie was first told she was leaving, followed by Samantha. They had faced eviction alongside Stephen Bear, Marnie Simpson, Frankie Grande and Ricky Norwood.
This series' finalists are: Bear, Marnie, Frankie, Ricky, Renee Graziano and Aubrey O'Day.
CBB continues at 9pm on Channel 5.