It has the same button detail and lace trims as her sister's stunning bridal gown.
The dresses for bridesmaids - Lady Louise Windsor, Margarita Armstrong-Jones and little three year-olds Grace van Cutsem and Eliza Lopes - were hand-made by Macfarlane and her daughter Charlotte Macfarlane at their homes in Wiltshire and Kent.
The younger bridesmaids wore ivy and lily-of-the-valley hair wreaths, which were inspired by the headdress worn by Kate's mother Carole Middleton at her wedding in 1981.
As a special memento, each of the bridesmaids' have had their name and the date of the wedding hand-embroidered onto the lining of each dress.
Echoing Kate's dress, they were made using the same fabrics.
The ballerina-length, full, box pleated skirt was used to add "a sculptural quality", with the layering of ivory over white satin gazar adding depth of colour.
They were hand-finished with delicate English Cluny lace, which is visible under the skirts, and four layers of net underskirt.
The puff sleeves and neckline are trimmed with the same English lace as the Bride's underskirt.
The backs have been finished with the same button detail.
The sashes were made of pale gold wild silk, which is tucked at the front and tied at the back in a sumptuous bow, St James's Palace said.
They wore classic Mary Jane style satin shoes with a Swarovski crystal buckle.
These were made by Devon-based Rainbow Club, which has been designing, making and colouring handmade wedding shoes since the mid-1980s.
The bridesmaids' bouquets by Shane Connolly used flowers from the bride's bouquet, including lily-of-the-valley, sweet William and hyacinth.
Capes were made to be used if the weather was poor.
The waist-length capes, also by Nicki Macfarlane, were made from ivory Yorkshire wool, edged in fine English lace and tied at the front in the same satin gazar as the dresses.
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