Margot Frank (16 February 1926 – early March 1945) was the elder daughter of Otto and Edith Frank, and the older sister of Anne Frank. - http://en.wikipedia.org/wiki/Margot_Frank -- (via Sandy https://www.pinterest.com/pin/333407178637379344/ )
Margot Frank....Anne and Margot initially share one room in the Secret Annex. From the time that Fritz Pfeffer arrives, Margot sleeps on a folding bed in her parents’ room. Anne has to share her room with Mr. Pfeffer.
That striped cardigan, bottoned shirt, and pencil skirt makes for a neat picnic outfit. 1941, somewhere in the Netherlands - Maccabi Hazair related gathering. Also, she looked really adorable with that smiling laugh.