organizers are putting together last minute details. >> the concept was introduced to london last may. >> reporter: now the london morning gloryville dance parties attract upwards of 800 ravers each time. >> last month was our largest event, in new york and in the states. though it worked so well in london for the last year, it's scary bringing something like that so new to a different new city. when morning comes around we are there from 4:00 in the morning. setting everything up. i'm like, is everyone going to get up and get out of bed? >> reporter: in just two hours, this empty loft space will be filled with hundreds of bodies. getting dressed for a morning rave is harder than you might think. these sisters literally cannot wait to get their dance on. >> can you tell us how you are feeling this morning? >> great. super excited. >> how come you brought hula hoops? >> because i'm a hooper. >> reporter: this morning rave has yoga classes, massage stations, and if you feel so inclined, you can even hul la hoop. >> it's so much about being