Upon the death of Diana on 31 August 1997, Sarah flew to Paris with her younger sister, Jane, and Prince Charles to accompany Diana's body back to England. She contributed to the readings at Diana's funeral. She was co-executor of Diana's will and was president of the Diana, Princess of Wales Memorial Fund. Sarah attended the wedding of her nephew Prince William to Catherine Middleton on 29 April 2011. It is said that William and Catherine are close to Lady Sarah, with whom they spent a weekend on the 16th anniversary of Diana's death. Sarah also attended the wedding of her other nephew Prince Harry to Meghan Markle on 19 May 2018.