Following the latest eviction, the pair decide to act up and trash the bathroom.
After being saved from the public vote, Jemma encourages Brandi to help her cause chaos.
The pair use various beauty products to cover the walls and mirrors in messages before throwing cushions and sticking toilet paper in front of the cameras.
"We're cleaning Big Brother, we're cleaning," Jemma says. "We're cleaning and spraying.
"See you can't get in trouble because we're cleaning and spraying. Clean and spray, clean and spray. That is just how we spray it on the mirrors. We are happy in this place. We should get rewarded for this cleaning."
After the mess is discovered by the other housemates, Sandi is left fuming.
In the kitchen, Sandi is letting off steam to Paul and Amelia after discovering that Brandi and Jemma had messed up the bathroom: “They are taking the p*ss!
"It’s petty! It’s disgusting!”
Paul advises Sandi to talk to pair; “Tomorrow we’re having a house meeting!”
Elsewhere tonight, Brandi and Jemma also use the bathroom to talk about Sarah and her relationship status with Chad.
Brandi says: “she’s playing the victim” and Jemma continues “She’s playing the whole thing down because she’s saying I’ve only been with him 4 weeks but on the very first day I asked her about him and she told me she was in love with him and they’ve said I love you, that’s deep sh*t.
"What so you can’t wait until you get out to get with Chad?”
Brandi says: “She’s one of those people who has to have a yes person around her at all times” with Jemma saying “…and it’s always everyone else’s fault”.
Celebrity Big Brother 2017 airs tonight at 9PM on Channel 5