Matt Crossick/PA Wire
Happy birthday, Brooklyn Beckham!
Starting off with a throwback picture of the birthday boy from his childhood days enjoying a swim, David wrote, "Happy 21st to my big boy what more can I say about you other than you have grown into the most beautiful human being and that makes dad so proud .. You are kind , passionate and caring and as a father that's what you want to see in your son..."
The professional athlete continued, "We have had so many great moments as a father and son together like lifting trophies in all the places that I won them and for me that was always my dream ... I love you bust have the most amazing day because u deserve it." He also uploaded a picture of him and his son to his Instagram Stories and wrote, "Love you big boy."