Maisy has become the fourth housemate to be evicted from Big Brother.
The Abercrombie and Fitch store model left the house, leaving rival Faye to last another week.
The 19-year-old, from Bromley, Kent, is the second contestant to leave the show this week, after Mark Henderson quit on Wednesday, saying he had had enough of being filmed and being "trapped".
As Maisy left, a new housemate was due to join the remaining contestants in the latest twist in the Channel 5 show.
Maisy left to a positive reception from the audience, shouting "I love you" as she was cheered and clapped.
The newcomer to the house was revealed as Faye's older sister, former WWE developmental talent Jemma Palmer.
She told host Brian Dowling: "I'm just going to be myself and give them a shake-up, they need a big slap round the chops."
Of surprising her sister, she added: "Hopefully she will be happy, but she might just kick off. There's a rivalry going on."