The 40-year-old ex Manchester Uniter star revealed on Graham Norton Show that the jumper his 16-year-old son is wearing in the popular picture is actually his, reported People magazine.
"That's my jumper. It was my jumper so I had to tell him! I do find him going in my wardrobe - even though he doesn't think I'm a cool dad, I still find him wearing my clothes every single day," Beckham said.
Brooklyn was wearing a Ralph Lauren creation in the Instagram post.