Victoria Beckham's daughter Harper showed off her sweet, thoughtful side once again on Monday when she penned a heartfelt bedtime note to each of her parents.MORE: Victoria Beckham's homeschooling reward for daughter Harper is incredibleFormer Spice Girls star Victoria took to her Instagram Stories to share photos of two handwritten letters the nine-year-old had left on her mum and dad's pillow for them to see before they went to bed – which included telling dad David Beckham how "proud" she