Lilibet Diana, the second child and daughter of Meghan Markle and Prince Harry has been added to the royal line of succession seven weeks after she was born at the Santa Barbara Cottage Hospital in California.

Historically, the line of succession dates back to William III, also known as William of Orange, in the 17th century. The most recent amendment ended the system of male primogeniture in 2013, which directly privileged the sons of male heirs over their sisters.

In addition, a historic rule prohibiting a royal from keeping their position on the list if they married a Roman Catholic was also removed by the amendments. Changes to the system went into effect in March 2015 but only applied to royal children born after October 28, 2011.

Lilibet’s position as eight in line to the throne has been updated on the UK official website on Monday. Currently, she is behind her 2-years-old brother Archie who is seventh in the line. Prince Harry, a father of two beautiful kids, is sixth in line to the throne of Queen Elizabeth.

Neither Meghan Markle, Kate Middleton, nor other royal spouses, such as Mike Tindall and Sarah “Fergie” Ferguson, Duchess of York, do not make in the list since they are not royals by birth.

Despite this, Lilibet’s position in succession is not certain. If William and Kate’s children become parents in the future, Lilibet’s position might slip further down the list.

In the current order of succession, Prince George, Princess Charlotte, and Prince Louis are three to five on the list, behind their father, Prince William, and their grandfather, Prince Charles, who is first in line.

Currently 72 years old, Prince Charles holds the record of the longest-serving heir in British history, having been in the role since 1952 when Princess Elizabeth took over as monarch. At the time, Prince Charles was only three years old.