As if it wasn't enough to be overshadowed by the 1960s, the dear old '70s sought out retro style at every opportunity. Think Laura Ashley. Think smock tops. Think of those revolting, to the floor dresses with puffed sleeves. Think of the '50s look. Think of the '60s look. Think of the '40s look. Think of those 1930s platform shoes.
But it wasn't enough to buy new clothes made in a retro style - the adorable '70s also decided that genuine old clothes were a WOW, as this newspaper article from April 1976 shows.