black backless formal dress Simple Halter Mermaid Long Prom Black / Custom Size Floor length Lace-Up Open-Back Long Black Prom

And even if it's wide, the fact that the overdress reaches mid-calf means that running won't be very comfortable or agile

Just too much going on

Additional reporting by Estelle Doyle You can follow BBC Trending on Twitter @BBCtrending, external , and find us on Facebook, external

Lighter-colored versions from the likes of Kate Barton and Simkhai are better for earlier ceremonies, while Carolina Herreras gold sequined dress (with rosette appliqus on the bodice) and Self-Portrait rhinestone draped gown are perfect for after-hours glamour

No products GemGrace femaleadult$71.99 $95.99 -25% New product Warning: Last items in stock