David and Victoria Beckham have entered the “next chapter” of their lives. The 49-year-old sports star and Victoria, 50, have been married since 1999, but the couple have entered a new phase in their relationship, with so many of their kids leaving home. Victoria – who has Brooklyn, 25, Romeo 21, Cruz, 19, and Harper, 13, with David – told Vogue Australia magazine: “We woke up this morning and said, ‘We’re so proud of the kids, they’re such great, kind, sweet, humble, funny, hardworking young adults’. “Getting that balance is very difficult. I struggled with that a lot when the children were y…