Stevie Nicks Is Real Hot ... Underneath All Those Rags!

A sweltering Stevie Nicks still managed to perform -- despite nearly being asphyxiated underneath a landslide of crushed velvet, leather and lace! Stand back!!

Stevie kicked off her summer tour in Concord, Calif. on Thursday, dressed like an intergalactic extra from "X-Men" meets a high priestess at an Alaskan seance. You see your gypsy!

If the lavishly cocooned former Fleetwood Mac songstress doesn't want to collapse on tour, she'd better stop wearing everything in her closet at once!