According to her Wikipedia article, she was overshadowed by her sisters Ducky and Missy.
From eBay; some creases suppressed and spots removed with Photoshop and sepia tone removed by gogm.
Alexandra wears a turn-of-the (Last)-century dress where special attention is still being paid to sleeves.
Keywords: Gimm, Alexandra of Edinburgh, Princess, Wettin family, Hohenlohe--Langenburg family, German, straight coiffure, scoop neckline, full sleeves, choker necklace, necklace, brooch