Fun fact: Not all of Queen Elizabeth's great-grandchildren have royal titles.
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The 7-year-old son of the Duke and Duchess of Cambridge is third in line to the British throne, falling just behind his father, Prince William.
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As Prince George's younger sister, the 5-year-old daughter of Prince William and Kate Middleton is fourth in line to the throne.
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He may only be 2 years old, but as the third-born child of Prince William and Kate Middleton, he's fifth in line to the throne.
Prince Harry and Meghan Markle's son, 20-month-old Archie, is seventh in line to the British throne.
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Once born, Meghan Markle and Prince Harry's second child will be eighth in line for the throne, following older brother Archie.
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Princess Eugenie's first child with husband Jack Brooksbank will follow his mother as the 11th person in line for the throne.
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Although the oldest of Queen Elizabeth II's great-grandchildren, the 10-year-old is 18th in line to the throne.
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Savannah's 8-year-old sister is 19th in line to the British throne. Their father is Peter Phillips, the eldest son of Princess Anne.
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The 7-year-old is 21st in line to the throne, falling behind her mother, Zara Tindall, who is Princess Anne's daughter.
The 2-year-old follows her older sister Mia to be 22nd in line to the British throne.
Zara and Mike Tindall welcomed their third child in March. The newborn is 23rd in line to the throne.