Victoria Beckham shares four children with her husband David, and on Sunday, the star penned a heartfelt tribute to her eldest Brooklyn in honour of his 24th birthday.For the special family occasion, the former Spice Girl shared a touching photograph of Brooklyn hugging his 11-year-old sister, Harper.WATCH: Brooklyn and Cruz Beckham support mum Victoria at Paris Fashion Week showThe aspiring chef looked effortlessly cool in a crisp white T-shirt and a pair of jeans. Harper, meanwhile, made a statement in a bright cobalt blue jumper.