From what information I can gather, these dresses are called Edwardian era dresses with a pigeon-chested front and Edwardian styled square panel and have intricately detailed designs probably including lace. My guess just by looking seems to be made of silk and are day dresses-the modern fashion of that time. Both ladies sport the Gibson Girl hairstyle. Please anybody, can you explain the significance of the coin necklace Princess Alice is wearing and whether it may be representative of coins struck for the family, and equally important to me, why wear as a pendant on a chain? My great-grandmother is dressed almost identically, including the necklace in her wedding photo. Thank you for any and all input.