Before he entered the house, Louis Walsh claimed to know that his former on-screen colleague Sharon Osbourne was going in with him.

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In last night’s big launch night twist on Celebrity Big Brother, the TalkTV star did indeed enter the house as the first ever ‘lodger’.

She was reunited with her fellow former X Factor judge where they were given access to a secret part of the house, their own secret lair.

True to form, they both had to judge the other housemates together as they entered one by one.

Three housemates they both had the worst first impressions of would be in danger of facing the first public vote and eviction.

They both deliberated, but as the first ever lodger, Sharon had the final say on the which three housemates were chosen.

But when the duo re-entered the house, fans thought the housemates feigned their surprise reaction.

They took to X – formerly known as Twitter – in their droves as they slammed the group for their acting.

They are all really s**** actors aren’t they 🤷🤷 pretending they don’t know Louis and Sharon “the judges” are in another room #CBBUK

One fan exclaimed: “The housemates all acting surprised saying “the judges” “who’s the judges” like they don’t already know it’s sharon and louis #cbbuk.”

A second noted: “They’re not even pretending they don’t know it’s Louis & Sharon, Colson literally shouting “the judges” 🤣 #CBBUK.”

“The housemates doing nothing to cover the fact they know it’s Sharon and Louis, continuously going “oh it’s the judges” like cmon TRY 🤣🤣 #CBBUK,” joked a third.

Another sarcastically put: “All the housemates acting shocked when the secret judges are revealed to be Louis and Sharon #CBBUK #CBB.”

Meanwhile another person fumed: “It’s so obvious they all knew the line up, so many times did they slip up like they knew what was happening😕no one does fake reality like ITV. Get it back on channel 4/5!.”

And a fourth added: “Seems they all know who each other is & who was going in so why don’t they know Sharon and Louis are ‘missing’?”

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Celebrity Big Brother line-up

So who are the 13 stars expected to appear in the Celebrity Big Brother house? The Sun’s Jamie Downham takes a look…

Sharon Osbourne – TV legend – who is thought to be on a megabucks deal – said she was doing the show for “a good time not a long time”

Louis Walsh – Irish boyband manager who has never knowingly backed down from a fight. Sure to be a huge presence in the house.

Ekin-Su Cülcüloğlu – We know from Love Island, the Ek-ster is not above throwing about some dramatics to claw her way to the final.

Levi Roots – Reggae Reggae Sauce sauce packs a bit of a kick, but its inventor seems quite mild-mannered. Will that change under pressure?

Fern Britton – The former This Morning star called out Phillip Schofield – don’t think she won’t do the same to anyone who tangles with her.

Colson Smith – You’ll probably know him best as Corrie’s Craig Tinker – but prepare to find out he’s not much like his character.

David Potts – Ibiza Weekender’s breakout star is sure to bring a bit of the party isle to the house… but will people appreciate it?

Gary Goldsmith – Kate Middleton’s uncle is a big signing for ITV, but very much an unknown quantity among viewers.

Marisha Wallace – Top Broadway star may fill the brief of ‘American who doesn’t know what they’ve let themselves in for’.

Nikita Kuzmin – The Strictly pro is coming onto the show fresh off the show’s tour. Poor lad probably just wants a rest.

Zeze Mills – the social media star has a “no holds barred interview style” – which is just what we need in there.

Bradley Riches – The actor played sweet James McEwan in Netflix hit Heartstopper. We’ll soon find out what he’s really like.

Lauren Simon – She’s a Real Housewives of Cheshire star and you don’t get on that show by being shy and retiring.

Keep up to date with the latest news, gossip and scandals on our celebrity live blog