Infanta Sofia, 18, joined her parents, King Felipe and Queen Letizia, and sister, Princess Leonor, at a National Day reception at Zarzuela Palace.
The younger daughter of the King and Queen of Spain made her major royal debut, proving she is ready for her life in the royal spotlight.
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In other royal news, Prince Edward, the Duke of Kent, marks his 90th birthday, just weeks after the death of his wife, the Duchess of Kent.
Author's summary: Infanta Sofia makes royal debut at 18.