Ossie Clark and Alice Pollock, the 'pioneers of colossal cleavage and startling see-throughs" (that's how the narrator hilariously described them) liked to show their collections at London's Revolution club in the late 60s. For such a hipster venue and considering the coolness of the people behind the show, much of the audience just didn't match up with what was on display; many looked as if they'd wandered in for some appetizers and instead found themselves stunned, watching floaty polyester whirl around. However, there were exceptions of course: John and Yoko were there as you'll see below. If you want to see how the models got groovy on the dancefloor/catwalk you can watch here.
John and Yoko "managed to restrain their enthusiasm" (yes, the narrator said that). That's one way of looking at it. Another way is to say that John was three seconds away from punching the camera guy in the face.
(Um, is that a young Keith Richards behind Yoko?)
Like the other models, she was dancing around quite lively and judging by the looks on the faces of some of the women in the audience, they were not so comfortable with the looseness of her top. And here I thought J-Lo started that whole thing.
At another show, also in 1968, I guess this one being spring, we've got Patti Boyd modelling. At the time she was married to George Harrison who was there with some buds including John Lennon who looked a little more relaxed (well, compared to the last one, anyway).
George with 70s 'stache (above) and Patti: