Following his eviction on Wednesday night, Perez originally said he wanted to see Calum Best crowned as the winner of this CBB series, but now it seems the US blogger has had a change of heart.
Instead, he is backing Katie to take the title and making sure she comes out triumphant, Perez is now on a mission to get the Pricey votes from the public.
Taking to Twitter, Perez told his followers he thinks Katie P deserves to win the most.
Now out of the house, Perez has been watching back the show and after seeing a clip of Katie confronting Katie Hopkins about things she has said behind her back, the 36-year-old decided the glamour model would be a worthy champ for the show.
He tweeted: "I JUST watched @MissKatiePrice's light-shining moment on Katie Hopkins! I am changing my mind and vote! Vote Katie P!"
Hoping to win Katie P as many votes as he can, Perez then posted a video urging the public to make her a CBB winner.
A big fan of the Pricey, Perez was seen gushing about Katie during a recent appearance on CBBBOTS.
Lately Katie P has been criticised for being boring on CBB, but hitting back, Perez said: "I never thought Katie was on the fence. I told her, 'You're being honest and being yourself, and if I saw you getting into fights and drinking and parting in the hot tub, you're a mother of five, you just had surgery. Chill!'
"Katie is being herself in the most authentic nice way. She is an incredible mum and such an inspiring businesswoman. I love her."
Earlier this week, Perez left the CBB house along with Kavana in a double eviction.
Following his exit, Perez told Emma Willis he was "SO happy" to finally be out.
Claiming his time in the house had been "traumatic", the dad-of-one admitted if he could go back in time and not do the show, he would.
Now, just five housemates remain in the house - Katie P, Katie H, Calum, Michelle Visage and Keith Chegwin - and each will be leaving during tonight's CBB finale.
The CBB final airs tonight on Channel 5 at 9pm.
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