David Beckham's little girl, Harper, just hit a major kid milestone, and he couldn't be more excited. On Sunday, the retired soccer player shared an adorable video of his 5-year-old riding a bike for the first time without any training wheels. "So so proud," he captioned the short clip with a heart emoji. Not only does he run alongside her as she makes her way down the road, but the look on his face is pretty priceless. Of course, this isn't the only cute Beckham family moment we've been blessed with recently. The whole gang showered Victoria with love when they celebrated UK Mother's Day on Sunday.