Lady Amelia Spencer and Lady Eliza Spencer offered two takes on the indelible ensemble at the British Fashion Awards.

You could fill a book with Princess Diana’s many iconic moments (and plenty have), but perhaps her greatest sartorial move was when she wore that black Christina Stambolian off-the-shoulder gown—which became knows as the “revenge dress”—following Prince Charles’s confession of adultery on national television.

Princess Diana's nieces, Lady Amelia Spencer and Lady Eliza Spencer, made a statement at the British Fashion Awards on Dec. 2 — and if their chic black gowns looked familiar, there's a reason for that.