It brings to mind Queen Elizabeth 11's coronation dress. That too was embroidered in Norman Hartnells's workshop with symbolic flowers.
"The final version featured a Tudor rose, embroidered in very pale pink silk, with pearls, gold and silver bullion, and rose diamante; the Welsh leek, embroidered in white silk with leaves of very pale green silk; the Scottish thistle, with pale mauve silk and amethysts and a calyx embroidered in reseda green silk, silver thread, and diamante dewdrops; the Irish shamrock, like the thistle, was embroidered in soft green silk, silver thread, bullion, and diamante.[5] the Canadian maple leaf, made with green silk embroideries with a crystal vein and gold border; the silver fern of New Zealand, embroidered in straight stitches using soft green silk and veined in silver and crystal; the Australian wattle flower, made with a coarse mimosa yellow wool and green and gold foliage; the South African protea, embroidered in shaded pink silk, with green silk leaves and silver outlined petals; the lotus flower of India, made with seed pearls and diamante and mother of pearl embroidered petals; the Lotus flower of Ceylon, made with opals, mother of pearl, diamante, and soft green silk; and the three emblems of Pakistan: wheat, in oat-shaped diamante and fronds of golden crystal, cotton, made in silver with leaves of green silk, and jute, embroidered in green silk and golden thread."