The youngest Beckham looked unrecognisable in a rare photo shared by her dad David
David shared a series of photographs of his "princess", from throwback family moments with her brothers to precious memories of Harper supporting him on the pitch.
"Happy 13th Birthday to my beautiful little girl," David began. "Daddy is so proud of you, you have grown up to be a kind, generous and a beautiful young lady with the most amazing heart and the most amazing smile that we all love so so much."The doting father-of-four added: "Always be the beautiful person that you are. Harper Seven you're my world.
"You really are our everything Harper Seven and we are so proud of the happy, beautiful, talented young lady you are becoming. We love you so so much."Harper Beckham is adorable in cool-girl summer dress in sweet photo with dad David
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