Everyone remembers the powder-blue Catherine Walker dress that the Princess of Wales wore to the Cannes Film Festival in 1987, but Diana also wore a playful puffball dress that felt entirely appropriate for the French Riviera in the ’80s.

Everyone remembers the powder-blue Catherine Walker dress that the Princess of Wales wore to the Cannes Film Festival in 1987, but Diana also wore a playful puffball dress that felt entirely appropriate for the French Riviera in the ’80s.