The public has relentlessly praised Kate Middleton and Prince William after the couple shared sweet photographs of their family during a private meeting with famous naturalist and environmentalist Sir David Attenborough. Sir David, Author of the Blue Planet, who is known for his support for a more sustainable planet, went to Kensington Palace earlier this week to attend a private outdoor screening of his upcoming feature film. The shared photos and their outfit choices were perfect. However, the moment The Duchess of Cambridge placed her hand on her stomac in the first photo made the eagle-eyed royal fans even more excited. #KateMiddleton #PrinceWilliam #DuchessOfCambridge