Here's my viewpoint on this. The scene around 5:07 showed her from the thighs up. Incredibly beautiful! She's holding her hair up, boobs forward, and working that booty for the hula hoop. Her technique does need some fine tuning however. Remy Lacroix has some damn fine hula hoop skills. You might want to check this out:
She looks fantastic in this vid! Made me instantly do an internet search for nude hula hooping...but this was the best vid I could find. LOVE her natural jiggles...especially the side views of those tits.
http://xhamster.com/movies/2559440/sexy_brunette_with_flashing_hula_hop.html
http://xhamster.com/movies/1988703/remy_lacroix_hula_hoop_dance_music_video.html