Wizarding World-Inspired Beach Wedding Suit

I'm looking for a flowing robe-style suit for a beach wedding that feels magical, like it's from the wizarding world of Harry Potter.

Requirements:
- Robe-style suit design
- Beach wedding suitability
- Cotton fabric
- Color palette in light neutrals (e.g., beige, ivory)

Ideal Skills and Experience:
- Experience in creating custom suits
- Familiarity with robe-style garment construction
- Expertise in working with cotton fabric
- Strong understanding of light neutral color palettes