LONDON -- If you had to rank families in terms of their Instagram prowess, the Beckhams would almost certainly be up there.

To celebrate his daughter Harper's fifth birthday, David Beckham shared a sunny black-and-white picture of the two of them together -- along with a heartfelt message.

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"Such a special girl in so many different ways," he wrote. "We are so lucky to spend each day with such a beautiful soul."

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Victoria Beckham also took to Instagram to wish her daughter a happy birthday.

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So damn adorable.

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