Hippie style is fashion style at era 60-70. But it doesn't mean this style can't apply to day. Many hijaber like to apply hippie theme for their fashion style. the characteristics of hippie style is creative freedom. And the outfit for this style dominated by long-cut dress, Floral Pattern, multi colors, and eccentric accessories.
Although this style appeared at 1960-1970. But this style still be favorite choice. Do you want to try this style in your special day or certain event? The following images bellow are hippie style that i've gotten from many sources, perhaps these are be good inspirations for you.
source: google