The Goebbels children were the 5 daughters and one son born to Nazi propaganda minister Joseph Goebbels and his wife Magda.  The children, born between 1932 and 1940, were murdered by their parents in Berlin on 1 May 1945, the day both parents committed suicide.  The little girl is named Helga.  She was 12 when she had a cyanide capsule forced into her mouth by her mother.  This photo was taken in 1936 when Helga was 3.
photo source: FilmInspector from HitlerPictures