It's one of TV's most enduring reality contests, with a fanbase so loyal that even an Australian travel ban couldn't shut the show down.
Now, I'm A Celebrity is returning to Wales for a second year at Gwrych Castle - but who has won the ITV contest so far?
Take a look back at all 20 of the winners as we wait to find out who'll be wearing the crown this year.
1. Tony Blackburn - 2002
The first ever winner of the show was radio DJ Blackburn, who deserves extra credit for having no idea what he was letting himself in for.
2. Phil Tufnell - 2003
Former England cricketer Tufnell was the next to follow in Blackburn's footsteps, fighting off competition from John Fashanu and Linda Barker. He later had a successful stint on Strictly, too.
3. Kerry Katona - Early 2004
She was the first ever Queen of the Jungle and also one of two 2004 winners as the show completed two series that year.
Katona was joined in the jungle by a star cast including Katie Price and Peter Andre, who fell in love in camp and would later marry.
4. Joe Pasquale - Late 2004
The 2004 series was so good, ITV went for another one in the same year - won by squeaky-voiced comedian Joe Pasquale.
Although he was the winner, it was Paul Burrell who went down in camp history that series thanks to his hilarious reactions to challenges.
5. Carol Thatcher - 2005
She might not have seemed the most likely winner from the 2005 line-up, but Margaret Thatcher's daughter managed to beat Sheree Murphy and Sid Owen to the jungle prize.
6. Matt Willis - 2006
Busted star Willis was a popular winner in the 2006 contest, where even Myleene Klass and her famous showering bikini couldn't keep him from being named King of the Jungle.
7. Christopher Biggins - 2007
He might not have been the most athletic of the jungle contestants, but Biggins still won over viewers with his entertainment value in camp and provided more cheer than competitors who included Janice Dickinson and Katie Hopkins.
8. Joe Swash - 2008
The former EastEnder is something of a reality show king these days, but his I'm A Celeb stint is one of his best remembered gigs as he refused to shy away from even the most disgusting of tasks.
9. Gino D'Acampo - 2009
The TV chef overcame a controversy about cooking and eating a rat in the jungle to garner enough votes to be crowned the King of the Jungle 2009.
10. Stacey Solomon - 2010
Two years after her now-partner Joe Swash won the show, Stacey Solomon was also crowned Queen of the Jungle - kickstarting her career as a well-loved TV star after first finding fame on The X Factor.
11. Dougie Poynter - 2011
McFly musician Poynter managed to beat Mark Wright and Fatima Whitbread to the top spot in 2011 after taking a relaxed approach to life in camp.
12. Charlie Brooks - 2012
Her EastEnders alter ego Janine might be the nightmare to be stuck in a jungle camp with, but Brooks won viewers' hearts with her emotional chats about her young daughter who she was missing.
13. Kian Egan - 2013
Westlife singer Egan was the clear series 13 champion from the start as he held the group together through thick and thin, and took on his fair share of challenges with good humour.
14. Carl "Foggy" Fogarty - 2014
He wasn't one of the best-known names going into the show, but Foggy proved a hit with campmates and viewers - and even made such good friends with Jake Quickenden that he very nearly became his father-in-law.
15. Vicky Pattison - 2015
Geordie Shore's Pattison showed a completely different side to the hard-drinking reality star we thought we knew when she triumphed in the challenges and won the 2015 jungle crown.
Read more: I'm A Celebrity to return to Wales for 2021
16. Scarlett Moffatt - 2016
Gogglebox star Moffatt couldn't believe her luck when she crossed over to be the show's star rather than the viewer in 2016, and the icing on the cake was that she got to meet her heroes Ant and Dec.
17. Georgia "Toff" Toffolo - 2017
One of the show's poshest ever winners, Toff might be used to life in Chelsea but she wasn't afraid to slum it in the jungle (although she did have Stanley Johnson as her BFF).
18. Harry Redknapp - 2018
Possibly the favourite ever King of the Jungle, former football manager Redknapp admitted he'd never watched the show before signing up - but his hilarious moments with the campmates and his unshakeable love for wife Sandra made him a clear winner.
19. Jacqueline Jossa - 2019
Jossa was one of those winners whose journey from utter terror of the jungle to being brave enough to win challenges marked her out as the top contestant.
The former EastEnders star was also completely starstruck by Caitlyn Jenner as a huge Kardashians fan.
20. Giovanna Fletcher - 2020
Author, podcast host and TV star Fletcher was crowned the first ever Queen of the Castle last year thanks to her role as the camp mum lifting everyone's spirits.
This year, she's supporting husband Tom Fletcher in his time on Strictly Come Dancing after the McFly star and their three sons spent 2020 cheering her on from home.
Watch: Ant and Dec star in new promo for I'm A Celebrity 2021