Queen Elizabeth has become the world's longest reigning monarch following the death of Thailand's King Adulyadej.
The British monarch has been given the title following the sad passing of King Bhumibol Adulyadej, who died on Thursday (13.10.16) at the age of 88.
A statement from the Thai Palace read: "His Majesty has passed away peacefully at Siriraj Hospital. Even though the doctors tried their best to save His Majesty, his condition deteriorated."
Whilst Prime Minister Prayut Chan-o-cha added: "The government urges you to pray that His Majesty will rest in peace in heaven. We were blessed to live under his reign.
"Do not let his death stop you from following his principles and continuing to be good citizens."
The Prime Minister confirmed a decision was made in 2002 on who would be the king's heir following his death and that parliament would be informed of the decision shortly. He also asked for all Thais to wear black for the next 12 months to remember the late royal, who has been very popular with the people he served since his accession in June 1946.
Meanwhile, Queen Elizabeth celebrated another big milestone last year after she was named Britain's longest-reigning monarch in September 2015.
She said at the time: "It is one to which I have never aspired. Inevitably a long life can pass by many milestones - my own is no exception - but I thank you all and the many others at home and overseas for your touching messages of great kindness."
The British monarch - who ascended to the throne in 1952 - also celebrated her ninetieth birthday this year and was joined by close family and friends to mark the special occasion. The commemorations included a street party on The Mall and a string of events at the royal residence of Windsor Castle.
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