Tuesday 3 May 2016 15:57, UK
Leicester's wait for a first top-flight title came to an end on Monday night as Tottenham drew 2-2 with Chelsea.
The news was greeted with jubilation by supporters of the club and admiration from footballers, sportsmen, politicians, celebrities and beyond with Twitter reporting an 86 per cent increase in normal activity in the UK.
Here are some of the famous faces who've been reacting to one of the most unlikely triumphs in sporting history...
FIFA president Gianni Infantino: "It's a fairytale. It's one of these beautiful stories that only football can write and that no-one would have believed possible at the beginning of the season. It's a story that has made not just Leicester fans very happy but all football fans. This is the magic of football."
Zinezine Zidane, Real Madrid boss: "Miracles don't exist in football. They have had a phenomenal season, Ranieri has done a phenomenal job."
Jose Mourinho: "I want to congratulate everyone connected to @LCFC; players, staff, owners and fans. I lost my title to Claudio Ranieri and it is with incredible emotion that I live this magic moment in his career."
David Beckham on Instagram: "Wow, who would have known that a few years on from his dad winning Premiership after Premiership that Kasper would lift the same trophy....What an amazing moment for a team that many people have said 'what a surprise' - but out of any team this season Leicester deserve this moment."
Real Madrid and ex-Spurs star Gareth Bale on Twitter: "Gutted for @SpursOfficial but congrats to @LCFC, amazing season!! Love Football."
Boxer and Bolton fan Amir Khan: "What Leicester City have achieved is absolutely amazing. You would have been called crazy if you thought that Leicester would win the title at the start of the season - it's such an inspiring story."
Former Leicester striker Gary Lineker: "I've followed them since I was a little kid. I was a season-ticket holder until I was seven years old. I saw them in a cup final - lose - that was the closest we ever got to big glory. Won the League Cup a couple of times but this is just something else. This is actually impossible. There were no odds that I would have taken at the start of the season. No odds. You could have given me 10 million to one and I'd have said 'Nah, it's a waste of a quid'."
Prime Minister David Cameron on Twitter: "Many congratulations to Leicester. An extraordinary, thoroughly deserved, Premier League title."
Labour leader Jeremy Corbyn on Twitter: Congratulations to #LCFC and all the #Leicester supporters. A truly remarkable achievement.
Matteo Renzi, Italy's Prime Minister, on Twitter: "It's the greatest achievement in the history of English football, and it was led by an Italian#insane."
Kasabian guitarist and Leicester fan Serge Pizzorno: "Winning the Premier League? After that, even if we get relegated and we're in the Conference in 10 years, I won't care. We'll always have that."
One Direction singer Niall Horan on Twitter: "Congratulations Leicester City. What a story. Fantastic players, fantastic manager. Enjoy. Jamie Vardy's having a party ."
Pop superstar Adele said: "Proud of you Spurs but Leicester....what an inspiration. The best story ever. Congratulations."
New World Snooker champion and Leicester fan Mark Selby: "I can't believe it - I don't know what's more of a shock, me winning the title twice or Leicester becoming the champions. Hopefully in another two years I'll come back and win it again and Leicester will be Premier League champions again."
Chelsea captain John Terry: "Congratulations to Leicester because they have been superb this year. The rivalry with Tottenham means a lot but that still hurts us tonight losing the league title after the way we won it last year. It hurts passing the Premier League title to Leicester but credit to them, they've been superb. We've not been good enough but we'll be back next year."
Liverpool striker Mario Balotelli on Twitter: "Leicester city.. champion. Congratulations to the players and to an amazing manager as RANIERI!"
Peter Schmeichel, father of goalkeeper Kasper, on Twitter: "Congratulations to @kschmeichel1 and his @LCFC teammates for winning @premierleague."
TV presenters Ant and Dec on Twitter: "Congratulations Leicester City! What an achievement. Thrilled for you and envious of you in equal measure! Enjoy. It's well deserved."
Cricket legend Shane Warne on Twitter: "Well done, Leicester City. You showed all sportsman that dreams & fairytales can come true , if u truly believe, amazing story. Congrats."
Tottenham legend Ossie Ardiles on Twitter: "Leicester: Big congratulations from the bottom of my heart. Incredible, outstanding... extraordinary..."
Former Chelsea midfielder Frank Lampard on Instagram: "Up the Chels! Top finish from @hazardeden-10. Huge congrats to everyone at Leicester and particularly Claudio Ranieri. A gentleman who changed my life. #Ranieri #chelsea"
Danish boxer Mikkel Kessler on Twitter: "Congratulations @kschmeichel1! A historical achievement!! Well done!"
TV presenter Jeremy Clarkson: "So rare as a Chelsea fan to have everyone (nearly) on our side. Joyous evening. Well done Leicester. Well done."
Former Chelsea and Real Madrid manager Carlo Ancelotti on Twitter: "Congratulations to both Leicester and my friend Claudio Ranieri for their historic win of the Premier League."
Manchester City striker Sergio Aguero on Twitter: "Congratulations are due for Leicester City, deserving champions of the Premier League!"
Manchester City captain Vincent Kompany on Twitter: "Congratulations to the new Champions of England, Leicester City. Respect."
TV personality Piers Morgan on Twitter: "No superstars. No money. No fancy stadium. No excuses. No fear. Just passion, hunger, desire & determination. #Leicester"
Sky Sports pundit Chris Kamara on Twitter: "Here's a fairytale for ya. Once upon a time a team from Leicester won the Premier League against all odds. Now that is "unbelievable Jeff"
Former Liverpool striker Robbie Fowler on Twitter: "It's been on the cards for a while... just let that sink in for a sec. But ...WOW.. Leicester are champions... Absolutely superb. Well done
Pop star Robbie Williams: "Go on Leicester x"
Tottenham striker Harry Kane on Twitter: "Congratulations to Leicester on what they achieved. Finally thanks to all the fans! Let's finish the season strong now!"
Former Man Utd and Arsenal striker Robin van Persie on Twitter: "Congratulations to Leicester City on winning the Premier League! What an incredible achievement!"
Italian tennis star Roberta Vinci on Twitter: "Congratulations @LCFC! All the footballing world at the feet of Claudio Ranieri! How wonderful! You are great!"
Leicester mayor and lifelong fan Sir Peter Soulsby: "When we were burying a king they were seven points adrift at the bottom and here we are just over 12 months on and they are Premier League champions. It's hard to believe."
