On Monday, Catherine, Duchess of Cambridge gave birth to her third child, a little prince. But the one person who wasn't glued to her screen awaiting the baby's first photos like the rest of us? Queen Elizabeth.

The 92-year-old monarch was pictured horseback riding at Windsor Castle the morning her new great-grandson was born. The Queen was joined by head groom Terry Pendry. She was reportedly riding a pony named Carltonlima Emma, one of her longtime favorite horses, according to W Magazine.

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Of course, just because Her Majesty was on horseback doesn't mean she wasn't overjoyed with the new baby. Immediately after the baby's birth was announced, the Queen and other members of the royal family shared their enthusiasm for the new arrival on Twitter:

A lifelong horse lover, the Queen received her first pony at the age of four from her grandfather, King George VI. The Queen has been spotted on horseback numerous times throughout her reign, and sometimes she rides alongside another dignitary. Back in 1982, the Queen rode horses with President Ronald Reagan while he was at Windsor Castle on a state visit.



The Queen and Ronald Reagan in 1982. Getty Images

More recently and (perhaps more impressively!), she was seen riding a horse last year after recovering from a heavy cold. Once again, the longest-reigning British monarch in history proves that age is just a number.