Prince George holds his father Britain's Prince William's hand as he arrives on his first day of school at Thomas's school in Battersea, London.
Prince George holds his father Britain's Prince William's hand as he arrives on his first day of school at Thomas's school in Battersea, London.Reuters

Prince George, the third in line for the British throne, turns five today. To celebrate the special occasion, Kate Middleton and Prince William have flown to the beautiful serene beaches of Mustique. This will be their first vacation as a family of five— Prince George, Princess Charlotte and Prince Louis.

The Duke and Duchess of Cambridge are also accompanied by Kate's family—including her parents Carole and Michael. It is believed that the future king will have a grand birthday bash on the islands. George is also expected to try his hands on swimming on the Caribbean beaches.

As George turns five, here we bring you five cutest pictures of the royal heir.

Prince George
Britain's Prince William, his wife Catherine, Duchess of Cambridge and their son Prince George, pose for the official portrait in London.Reuters/Jason Bell

Who can forget George's adorable christening pictures accompanied by his doting parents, William and Kate. The ceremony took place days after the world saw the first glimpse of the royal heir in July 2013.

Prince George
President Barack Obama, Prince William, Duke of Cambridge and First Lady Michelle Obama talks with Prince George at Kensington Palace on April 22, 2016 in London, England.Souza/The White House via Getty Images

This picture became an instant hit among social watchers. George has indulged in some serious conversation with the US president Obama.

Prince George holds his father Britain's Prince William's hand as he arrives on his first day of school at Thomas's school in Battersea, London
Prince George holds his father Britain's Prince William's hand as he arrives on his first day of school at Thomas's school in Battersea, LondonReuters

Prince George's first day at Thomas's school in Battersea, London was indeed a global event with many comparing it with Prince William's school day accompanied by Lady Diana.

Prince George and Princess Charlotte
Prince George and Princess Charlotte are seen in this undated handout photo taken by the Duchess in mid-May at Anmer Hall in Norfolk and released by the Duke and Duchess of Cambridge.Reuters

The adorable image of George holding Princess Charlotte on his lap is definitely a must-watch.

Prince William, Kate Middleton
Prince William, Kate Middleton and their son Prince George.Reuters file

George became an instant hit among shutterbugs during a visit to the Sensational Butterflies exhibition at the Natural History Museum in London.