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The Duke of Cambridge, Prince William, Prince George

© Mario Testino / Art Partne

This Wednesday, July 22, marks the official start of Prince George's terrible twos!

So how will the royals celebrate the birthday boy turning the big 0-2? On the record, a palace spokesperson tells E! News "the family will be spending the day privately," but a source tells People that Kate Middleton, Prince William and Princess Charlotte will ring in Georgie's B-Day with him at their country home in Norfolk!

If the festivities are, indeed, taking place at Amner Hall, George will have plenty of room to run around —his parents' private 10-bedroom home which is located on Queen Elizabeth II's 20,000-acre Sandringham Estate.

No word yet if any of the prince's great-grandparents, grandparents, aunts or uncles will be on hand for this fête. Last year, though, practically the whole family attended George's Peter Rabbit-themed bash at Kensington Palace. Although Prince Philip couldn't make it due to a work commitment, Queen Elizabeth II wasn't about to miss her great-grandson's party! Prince Charles was in Scotland at the time, but he brought a squirrel plush back as a gift for his grandson. Kate's parents James and Carole Middleton were in attendance, as were both of her siblings, James and Pippa Middleton. Uncle Prince Harry celebrated his nephew's special day, too, as did Zara Phillips, hubby Mike Tindall and their daughter Mia.

The real question, though, is what to get for the B-Day boy/future king? He's already got quite a collection of presents from all around the world!

—Additional reporting by Lindsay Good