Holly Willoughby and Ant and Dec get the royal seal of approval as Duchess of York follows them on social media

Sarah, Duchess of York, follows Holly Willoughby and Ant and Dec on social media[Getty] Very few crowned heads have made social media accounts – with the likes of Kate Middleton, Meghan Markle and Prince Aggravate and William having official accounts run by Kensington Palace instead. But, Princess Beatrice and Eugenie’s mum has broken the mould and opened up her own personal account – and is surprisingly very much into her celebrities.  Sarah Ferguson, the Duchess of …