Well, they are speaking from experience, right?
Taking to Instagram yesterday evening, Katie shared a photo of herself and Cami looking oh-so-cosy as they settled in to watch the latest instalment of CBB. And with both known for being pretty outspoken, we're sure they didn't hold back when sharing with each other their thoughts on the show so far.
Alongside her photo of the pair looking beautifully fresh-faced, Katie told fans: "Just been horse riding with @cami_li and now about to eat roast dinner cooked by hubby then the kids bath time before watching cbb love seeing Cami and spending time with her this week."
She and Cami actually met while both starring on Celebrity Big Brother back in January, earlier this year. While Cami was one of the original celebs to enter the house, Katie was a latecomer, but that didn't stop her from going on to win the show. She won the public over after going head-to-head with Katie Hopkins on several occasions.
Cami, meanwhile, just missed out on reaching the final and left the house in a surprise eviction. She certainly got the nation talking thanks to her spats with US blogger Perez Hilton! One of just many reasons, why Katie and Cami's series of CBB was deemed the most dramatic yet...
Still, the new housemates are beginning to give the old a run for their money as there has definitely been fireworks since the series began last week. Natasha Hamilton and Farrah Abrahams came to blows on launch night, things then exploded between Farrah, Jenna Jameson, James Hill and Austin Armacost and Janice Dickinson recently found herself in hot water with Big Brother after *that* spitting gesture.
And it's only five days in.
Cami, however, doesn't seem too convinced about the celebs this time round, tweeting: "Why does this #CBBUK seem SO FAKE?"
She also added her fave is Fatman Scoop, before suggesting she would be up for making her CBB return. When a follower claimed they would like to see Cami go up against Teen Mum's Farrah, she replied: "Get me in that house!"
Katie, meanwhile, chose to keep her cards close to her chest, only revealing she thinks Janice will win the show.
Celebrity Big Brother airs nightly on Channel 5.
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