The Duke of Edinburgh, who is 80 in June, is expected at the birthday party along with the 100-year-old Queen Mother and the Queen's younger sister, Princess Margaret, 70, who is recovering from a ...

Beyoncé Helps Diana Ross Celebrate Her 75th with Impromptu Rendition of ‘Happy Birthday’ An insider tells PEOPLE that at 11 p.m. the party moved down the street to the Hollywood Palladium for ...