Velvet is a fabric that automatically signals occasion and intentionality which is exactly what you need for a hen party going out dress. The texture catches light differently than regular fabrics so the dress reads as special even in simple silhouettes. Velvet also feels luxurious against skin and that tactile quality matters when you are wearing something for several hours. The fabric runs cool which is helpful in a crowded bar or club environment. Velvet does require care in terms of storage and wearing but if you are going to wear a dress once for a major occasion the investment is worth it. These are the going out dresses that feel elevated without requiring sequins or obvious embellishment.