Harper Seven Beckham's name symbolizes more than just her dad's soccer jersey number.
In a video posted Friday on his Facebook page, David Beckham explains the significance of his and wife Victoria's newborn daughter's unique moniker.
"A lot of people have assumed that it's just because it was my shirt number that I wore for many years, and part of it is," the 36-year-old father of four says. In addition to Harper Seven, born July 10, the Beckhams have three sons: Brooklyn, 12, Romeo, 8, and Cruz, 6. "Part of it is because I had so much luck around wearing that number, wearing it for England, wearing it for Manchester United. It was such an influential number throughout my career, and a lucky number, but that wasn't the main reason."
So what was? "It symbolizes spiritual perfection, Seven Wonders of the World, seven colors of the rainbow, and in so many cultures around the world, it's regarded as a lucky number," he explained. "We love the name. We love Harper Seven."
Their daughter's first name, Harper, was a beloved "old English name," he explained. Also, Victoria's favorite book, the classic American novel To Kill a Mockingbird, was written by author Harper Lee.
Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!