Kensington Palace confirmed that the glittering headpiece had belonged to Princess Margaret, who wore it to the same event – the Diplomatic Reception – 55 years ago in 1958.
The tiara featured a diamond and pearl design with fanned motifs, floating diamond arches, two pearls at the base and a showstopping top pearl in the centre. Click link for more from Hello Magazine @ All the details on Kate's tiara - hellomagazine.com