From the Court Ball on 14 May 1935, The Times reported the following:

The Queen wore a magnificent gown of aquamarine-blue lace embroidered with diamanté and her ornaments were emeralds and diamonds. She also wore the Order of the Garter
The Duchess of York wore a dainty dress of cream lace embroidered in a basket design with silver and gold.
Princess Alice, Countess of Athlone, wore a period gown of ivory and gold brocade, the gold being embroidered in bouquets of rose, thistle and shamrock, and her jewels were diamonds. Her daughter Lady May Abel Smith, wore a dress of blue lamé with diamonds.
Princess Helene Victoria´s dress of yellow and silver lace was trimmed on the corsage with a blig cluster of shaded yellow flowers and she wore diamond ornaments, and Princess Marie Louise wore a gown of white satin, also with diamond ornaments.
Lady Maud Carnegie had a trained gown of pale blue corded silk woven with a silver thread, and two long draperies were fastened to the shoulders with diamanté clips. She wore a diamond tiara in Russian shape and diamonds.

From the Court Ball on 13 June 1935, The Times reported the following:
Her Majesty wore a magnificent gown of pink lace dilcately embroidered with diamanté. Her ornaments were diamonds, including the Koh-i-Noor, and the Order of the Garter.
The Duchess of York wore a dainty gown of white silk organdie embroidered with sequins and diamanté.
Lady Patricia Ramsay wore pink and gold brocade.
Princess Alice, Countess of Athlone, ... wore a dress of chiffon and reversible blue and silver lamé with a tiara and diamonds, and her daughter, Lady Mary Abel Smith, was in pale blue with diamond ornaments.
Lady Maud Carnegie wore a princess gown of figured cream satin with pearl ornaments and a turquoise, pearl and diamond tiara.
The Princess of Romania wore a simple dress of white and silver with a diamond tiara in Greek key pattern, and her sister, Princess Irene of Greece, wore a pale blue and silver lamé with a diamond tiara.


There are descriptions on the dresses of other guests, including some jewels mentioned. But little details. And no pictures obviously.