Question: are bell bottoms 70s or 80s?
Answer: 1960s, 1970s, 1980s and 1990s In the 1960s, bell-bottoms became fashionable for both men and women in Europe and North America. Often made of denim, they flared out from the bottom of the calf, and had slightly curved hems and a circumference of 18 inches (46 cm) at the bottom of each leg opening.