She has never believed that the labelled sketch by Holbein actually shows Boleyn because, over the years, questions have arisen regarding certain details such as: the sitter’s informal dress, the name being inscribed in an 18th Century hand (long after Boleyn’s death), and the light-coloured hair and full chin, when there are references to her having dark hair and a thin neck.
Source:
www.bbc.com
