Princess Augusta of Prussia (b. 15 Dec. 1986), 3rd child of Prince Frederick Nicholas of Prussia. Can't find much info on Princess Augusta. This may be a debutante photo but I'm not sure. Anyhoo, this is a very pretty pic of the British-born German royal.
Lord Leopold Mountbatten, GCVO (Leopold Arthur Louis; 21 May 1889 – 23 April 1922) was a descendant of the Hessian princely Battenberg family and the British Royal Family, a grandson of Queen Victoria. He was known as Prince Leopold of Battenberg from his birth until 1917, when the British Royal Family relinquished their German titles during World War I and changed their name to Mountbatten.
Rare photo of the duchess with her tiara: Wallis Simpson (Bessie Wallis Warfield-Spencer-Simpson) (1896-1986) USA wife of King Edward VIII “David” (Edward Albert Christian George Andrew Patrick David) (1894-1972) Prince of Wales UK, Duke & Duchess of Windsor
Queen Ingrid of Denmark (1910-2000) Queen Ingrid wearing the Ruby Parure Tiara along with matching earrings, necklace and broach which she willed to her grandson Crown Prince Frederick who has since given it to his wife Crown Prince Mary.