Prince Harry to come face-to-face with William at Diana's memorial unveiling Entertainment Wed, May 19, 2021 Prince Harry will 'absolutely attend' what would have been Diana's 60th birthday on June 1 Prince Harry will reunite with his brother William this summer at the unveiling of the memorial of their late mother Princess Diana. The Duke of Sussex will 'absolutely attend' what would have been Diana's 60th birthday on June 1, according to royal sources. “No one is going to tell Harry not to come, but how does he face his family?” a palace source told Page Six after Harry blasted Charles and Queen for generations of bad parenting.