Oh what a wonderful ears of wheat banner! I love ears of wheat tiaras. Thank you so much!
The ladies are (from left to right): Marie Adelaide of Cambridge Duchess of Teck, Princess Margrethe of the Netherlands, Queen Desidéria of Sweden, Princess Laetitia of Hesse (née Bechtolf). The last lady on the right is unknown to me, can someone state who she is please.
Found on Pinterest, the beautiful Hesse-Kassel ears of wheat tiara