'the showy disco style caught on and is now seen in dance halls and at parties. The long dress, inconvenient for modern dances, has given way to narrow satin trousers and all sorts of tops'. This is clearly a fashion shoot, not sure how much this represents what people were actually wearing out in clubs.
The article was apparently originally published in Siluett, a long running fashion magazine produced in Tallinn (now capital of Estonia), a place 'sufficiently far enough away from the Soviet mainstream to allow relatively liberated experiments in popular culture to take place' according to an article about the magazine
