Show your BFF some love on their special day using one of these touching or unique birthday wishes for best friends.

One penned: "Warmest birthday wishes Princess Estelle," while a second remarked: "Very beautiful portrait! Happy Birthday," and a third chimed in: "13… wow times flies! Happy birthday Princess ...

Captioning the picture, the Swedish royal family's social media team wrote: "Happy 13th birthday, Princess Estelle!" before tagging the photographer, Kate Gabor. Royal fans quickly flocked to the ...