Well, not permanently but perhaps for an afternoon!
According to The Sun, Marnie Simpson's cousin and co-star Sophie Kasaei has been lined up to enter the house this week as part of a task where housemates will get a surprise visit from familiar faces.
And if it happens, she has some big questions for Marnie's new boyfriend Lewis Bloor!
A source told the newspaper: "She's really proud of Marnie, she loves her to pieces, they're family – but she's not been as impressed with some of the other stars in there. While Marnie is all loved up with Lewis Bloor, Sophie knows what he's been saying when she's not around, and she's got a couple of questions for him."
It certainly seems like it could be true as Big Brother has teased via Twitter that the housemates have had some visitors...
Sophie hasn't said anything yet but did tell fans she's en route from Newcastle to London. Where the Big Brother house is. Just saying'!
Marnie and ex-TOWIE star Lewis struck up a romance in the house. They have the same agent in the outside world but apparently had only met once in passing before being cooped up together. Romance soon blossomed and just 15 days later came the 'I love yous'.
CBB continues 9pm on Channel 5.