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Princess Charlotte might be known as "Lottie" [3] around friends and family, but she's not the only royal with a cute nickname. Princess Eugenie, aka "Euge," wished her sister Princess Beatrice a happy 31st birthday in a heartfelt Instagram post on Thursday. Like any close sisters, she referred to Beatrice by her family nickname, which she revealed is "Beabea." So sweet!
"You have been bossing it since before I was born and continue to be the most wonderful person, friend, and big sister," Eugenie captioned the series of adorable throwback photos. "Happy Birthday to you Beabea!!" Even Queen Elizabeth herself goes by a few unexpected nicknames [4], so I wouldn't be surprised if Prince Harry and Prince William revealed their nicknames for each other next. Until then, happy (belated) birthday Princess Beabea!