ISLAMABAD          -           With his little hands smudged with paint and a broad grin on his face, Prince Louis is clearly pleased with his artistic creation. As he turns two, this charming picture shows that – just like millions of other children across Britain – his parents are keeping him busy by painting rainbows to celebrate the NHS. Kensington Palace thanked the public for all the birthday wishes in a Twitter post, and Prince Charles – known by his grandchildren simply as Grandpa - recently released an intimate portrait of him hugging Prince Louis to mark the special day.