I eventually found some helpful articles where Emma Watson, who surprisingly had a large part in contributing to the design of the dress (well done, Emma!) and Jacqueline Durran, costume designer, shed some light on the details of the gown
The combination of premium brocade fabric, detailed lacework, and period-accurate styling makes this gown an outstanding choice for special occasions, theatrical performances, or formal photography sessions
Fully lined and lightweight, the Alva offers a clean, confident look that transitions seamlessly from day to night
The fashion designer also chooses appropriate colors, fabrics, and textiles for pieces, and may choose what embellishments will appear on collection clothing, shoes, and accessories
Professional laundries know this, which is why they focus on stain-specific chemistry rather than just tossing bleach into the mix