Her Wikipedia article is here. She became Wilhelm Heinrich von Sachsen-Eisenach's second wife in 1723 and bore no children. This portrait appears in a double-portrait here.
From europeana.eu/portal/en/record/92062/BibliographicResource_1000126072456.html; removed monocolor tint.
Young Anna Sophia Charlotte wears her hair short and curly and a dress with a U-neckline and a round skirt. Louis XIV and his influence are gone.
Keywords: Anna Sophie Charlotte von Brandenburg, Anna Sophie Charlotte of Brandenburg-Schwedt, Herzogin von Sachsen-Eisenach, Hohenzollern family, Wettin family, Princess, Duchess, German, curly coiffure, hair jewelry, chemise, modesty piece, elbow length under-sleeves, U-neckline, fitted bodice, jeweled U-neckline, elbow length full flared notched over-sleeves, clasps, girdle, vee waistline, robes