Contestants were gathered in the living area as the twist was revealed by Big Brother.
Jersey farm girl Lauren Carre and porn star Benedict Garrett were nominated for Friday's eviction earlier this week.
So far, Luke Anderson has expressed his anger at the results, claiming Arron Lowe should have been nominated.
From this evening, any housemate caught talking about nominations is likely to be punished harshly by Big Brother.
Big Brother continues daily at 10pm on Channel 5.