The necklace Lady Kitty wore with the blue dress with floral motifs may be the second in this link. The earrings in the 4th image here seem similar to one photo I have seen of Lady Kitty in one dress, but I have not double checked.
I think that at least 3 of the suites are by Dolce & Gabbana, coming from their high jewellery range.
Certainly, the necklace with the ivy leaves is from Dolce & Gabbana.
See the second photo in this item by Tatler
The ivy leaf necklace caught my eye for several reasons.
1. It seems a return to some Victorian jewellery styles, with the use of enamel and naturalistic elements.
What intrigues me the most is how the two cherubs have been incorporated -- a very romantic element.
I wonder what material has been used to form the cherubs?
The riotous colours in what I am dubbing the flower necklace compliments the theme of the dress. I can hazard a guess at most of the stones used, and I think that what looks like largish diamonds may in fact be heat treated rock crystal.
What do others think?
I suspect that all of the jewels photographed on Lady Kitty Spencer may be from Dolce & Gabbana, but have to find other images to support that idea.
I am coming to the conclusion that all the jewels seen on Lady Kitty in her wedding series of photos are from Dolce & Gabbana
The necklace Lady Kitty wore with the blue dress with floral motifs may be the second in this link.
The earrings in the 4th image here seem similar to one photo I have seen of Lady Kitty in one dress, but I have not double checked.