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Cut for a refined silhouette, this gown transitions seamlessly from prom to black-tie galas and upscale celebrations

A relaxed-fit gown has adjustable thin straps

Earth tones such as these complement the vibrant hue of purple and create a balanced and harmonious look

I stayed TTS, wearing a US8 in Topshop

In misses and some plus sizes, this long black formal dress has a sheer corset-style waist that wraps around to the deep v-back, while the long skirt opens in a side slit before draping to the floor in a flattering a-line shape

Similarly, a semi-formal wedding may have a rehearsal dinner dress code thats more casual or laid-back