Most likely refers to the title character of the 2007 American film 'Sydney White' (《
希德尼·
怀特》), a Snow-White-meets-college-sorority comedy starring Amanda Bynes. The middle dot (·) marks the gap between given name and surname, the standard Chinese convention for Western full names. Phonetic breakdown:
希 (xī) 'Sy-',
德 (dé) '-d-',
尼 (ní) '-ney' = Sydney;
怀 (huái) 'Whi-',
特 (tè) '-te' = White.