This glowing gown is made up of several miniature sequins that use “light-absorbing phospors”.
This dress made it’s debut after Hurricane Irene, inhabitant.com says:
“In the event of a blackout, perhaps you could adorn yourself in this glow-in-the-dark sequin dress by Halston. Modern, haute and surprising practical — especially if you were met with shelves of sold out flashlights and batteries — this dress will let you shine even in the most dire of situations. In case of emergency”