ITV have released a 'first look' trailer for the upcoming new series of Big Brother.
The hit reality format made its triumphant return to screens last year on new home ITV2.
A new trailer for series 21 has dropped - albeit with an unusual twist.
In the clip, the iconic House is filled with a herd of guinea pigs - meant to represent the show's Housemates.
Host AJ Odudu and Will Best are shown watching their actions from above.
Meanwhile, the show's long-time narrator Marcus Bentley, says: "The original social experiment.
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"Big Brother returns this October on ITV2 and ITVX."
Last year's Big Brother revival marked the first time that the show had been on screen in five years.
A total of 16 people competed over the course of 42 days.
Ultimately, Jordan Sangha emerged as the winner, with Olivia Young as runner-up.
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As well as winning the show, Jordan also formed a relationship with Henry Southan, who'd finished in third place.
It comes as Henry recently hinted at the pair taking their romance to the next step.
When asked about if the couple have plans to tie the knot, Henry exclusively told The Sun: "Who knows, I love him to bits."
He added: "Everything is going well. We live together, we moved in very soon after we came out.
"It's been going so well. I think it's so weird, I think Big Brother is maybe actually a dating show, I don't know".
Earlier this year, the celebrity format made its return to viewers' screens.
Big Brother winners from over the years
Since launching in 2000, reality TV juggernaut Big Brother has crowned several champions over the years. Let's take a look back at some of them.
Series 1 - Craig Phillips
Series 2 - Brian Dowling
Series 3 - Kate Lawler
Series 4 - Cameron Stout
Series 5 - Nadia Almada
Series 6 - Anthony Hutton
Series 7 - Pete Bennett
Series 8 - Brian Belo
Series 9 - Rachel Rice
Series 10 - Sophie Reade
Series 11 - Josie Gibson
Series 12 - Aaron Allard-Morgan
Series 13 - Luke Anderson
Series 14 - Sam Evans
Series 15 - Helen Wood
Series 16 - Chloe Wilburn
Series 17 - Jason Burrill
Series 18 - Isabelle Warburton
Series 19 - Cameron Cole
Series 20 - Jordan Sangha
The all-star line-up featured Ekin-Su, Fern Britton, Louis Walsh, Sharon Osbourne and Bradley Riches, among others.
In the end, reality star David Potts was crowned as the winner while Strictly Come Dancing pro Nikita Kuzmin was named runner-up.
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The final five also included Coronation Street actor Colson Smith, Louis and Fern.
Big Brother airs on ITV and is available to watch on ITVX.