Celebrity Big Brother made its long-awaited return to screens on Monday night, with 13 unassuming stars moving into the famous house.

Hosted by AJ Odudu and Will Best, the show kicked off its live launch with a brand new lineup and a shocking twist, following months of speculation around who would be taking part.

In a series first, Big Brother introduced its first ever house lodger, as Sharon Osbourne headed into the house for a guest stint, before being told she would choose which three stars would be at risk of facing the first public vote of the series.

Branding herself the ‘original reality star,’ Sharon appeared on the first four series of The X Factor from 2004 to 2007, the 10th series in 2013, and the 13th and 14th series from 2016 to 2017, with Louis starring alongside her.

‘I am good fun to live with, so my husband says. Chaos, I don’t cause it, it just seems to go on around me even though I do have a big spoon to mix it,’ she said in a pre-recorded video.

‘I definitely say what is on my mind, I think at my age I have earned it. I am so excited to be involved with Celebrity Big Brother because it is going to be a bumpy ride.’

Celebrity Big Brother made its long-awaited return to screens on Monday night, with 13 unassuming stars moving into the famous house, before a shock twist left viewers reeling
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Celebrity Big Brother made its long-awaited return to screens on Monday night, with 13 unassuming stars moving into the famous house, before a shock twist left viewers reeling

In a series first, Big Brother introduced its first ever house lodger, as Sharon Osbourne headed into the house for a guest stint, before being told she would choose which three stars would face the first public vote of the series
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In a series first, Big Brother introduced its first ever house lodger, as Sharon Osbourne headed into the house for a guest stint, before being told she would choose which three stars would face the first public vote of the series

AJ Odud and Will Best were back as hosts for the new series, and AJ stunned in a dramatic red metallic catsuit
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AJ Odud and Will Best were back as hosts for the new series, and AJ stunned in a dramatic red metallic catsuit

Branding herself the 'original reality star,' Sharon appeared on the first four series of The X Factor from 2004 to 2007, the 10th series in 2013, and the 13th and 14th series from 2016 to 2017, with Louis starring alongside her
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Branding herself the ‘original reality star,’ Sharon appeared on the first four series of The X Factor from 2004 to 2007, the 10th series in 2013, and the 13th and 14th series from 2016 to 2017, with Louis starring alongside her

Asked why she decided to take part, Sharon declared ‘why not?’ before promising to be ‘unfiltered’ during her time in the house.

Mere minutes after moving into the house, Sharon was tasked with showing off her judging skills, by choosing which three housemates will face the first public vote of the series later this week.

And Sharon was soon reunited with her X Factor partner-in-crime, as it was also revealed that Louis Walsh would be moving into the house.

It was claimed that bosses hope Louis will share secrets from his career while in the house, and he was visibly thrilled to be reunited with his beloved ‘Mrs O.’

Walsh said in a pre-recorded video: ‘I say things I shouldn’t say, my mouth has got me into trouble. I’m not easy to live with, I get up late, I go to bed late.

‘Celebrities have massive egos, I hope I get on with them because I have an ego too. I’ve never done anything like this in my life… I’m here just to have fun.’

Louis was the second celebrity to enter, but was quick to tell the hosts he knew X Factor pal Sharon Osbourne would be in the house.

Viewers found the moment hilarious, with one penning on social media platform X: ‘Louis Walsh being on the screen NOT EVEN TWO MINS and BLOWING his cover by saying, ‘Mrs O I heard she went in there’ ICONIC’

Sharon also left host AJ Odudu utterly stunned during the launch show, as she planted a huge kiss on her lips
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Sharon also left host AJ Odudu utterly stunned during the launch show, as she planted a huge kiss on her lips

And Sharon was soon reunited with her X Factor partner-in-crime, as it was revealed that Louis Walsh would be moving into the house
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And Sharon was soon reunited with her X Factor partner-in-crime, as it was revealed that Louis Walsh would be moving into the house

After reuniting with his beloved 'Mrs O,' Big Brother that Louis and Sharon would receive a secret mission, where they would judge the fellow housemates, before choosing three to face the first public vote of the series
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After reuniting with his beloved ‘Mrs O,’ Big Brother that Louis and Sharon would receive a secret mission, where they would judge the fellow housemates, before choosing three to face the first public vote of the series

Up next to enter was Strictly Come Dancing pro Nikita Kuzmin, who has reportedly ired BBC bosses by signing up for a show on their biggest rivals
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Up next to enter was Strictly Come Dancing pro Nikita Kuzmin, who has reportedly ired BBC bosses by signing up for a show on their biggest rivals

Since it was first revealed he'd signed up for the show, reports surfaced that Strictly bosses are fearing he could quit the BBC show after his stint in the famous house
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Since it was first revealed he’d signed up for the show, reports surfaced that Strictly bosses are fearing he could quit the BBC show after his stint in the famous house