Some Prince Louis Fans Are Getting a Special Thank-You in the Mail & It's Such a Sweet Thing for Kate Middleton & Prince William to Do

Prince Louis is typically known for being a total wild card in public and is usually the subject of hilarious photos. He is always caught looking totally unimpressed or “misbehaving” (as then-4-year-olds are prone to do). But the fourth in line to the throne just celebrated his fifth birthday at the end of April, and his official birthday portraits are absolutely heart-melting.

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