Supernanny Jo Frost shared her thoughts about Prince George and Princess Charlotte’s behaviour at the late monarch’s funeral on Monday.The global parenting expert, who knows a thing or two about children's mannerisms, took to social media to share her thoughts on the way the young royals conducted themselves during the historical service. Next to a snap of George, nine, and Charlotte, seven on Instagram, Jo began by saying: "Impeccable!!. “Little did Prince George & Princess Charlotte Wales know that their stamina and orderly conduct at the Queen's Jubilee would be the training in attending their own Gan-Gan's State funeral.