The late sixties/seventies era is known primarily for the wild and off-beat except for a few pockets of elegance here and there Thanks to a some savvy designers, the funk was fine-tuned into into high fashion. The era was the most politically charged of the century and invariably spilled over even into haute couture.
The above gown is out of Vogue UK 1966, a bouffant out of lace and satin by Belinda Belville (Later of Belville-Sassoon fame)
Another Belinda Belville masterpiece. My sister actually made this gown way back when as a bridesmaid frock. Though featured in Vogue Pattern Book April/May 1970, the precisely placed buttons, luxe taffeta and use of lace make this gown timeless, wearable in any decade.
This design while conservative with a traditional Alencon lace bodice and satin sash has has 70s bohemian elements in the sleeve and floppy hat
Boho looks of the 60s-70s era had a certain peasant element thanks to the influence of designers like YSL. Kerchiefs, bonnets and bandannas were introduced into bridal wear for the more informal wedding or brides who wanted to ditch the veil . . .