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.