In what decade did the concept of high-waisted swimsuits see a revival?

The revival of high-waisted swimsuits occurred in the 2010s, particularly as part of a broader trend towards retro fashion and body positivity. During this decade, there was a significant cultural shift where vintage styles, including high-waisted swimsuits, became popular once again. This resurgence was often spearheaded by social media influencers and fashion brands emphasizing a nostalgic aesthetic that appealed to a younger generation while also promoting a more inclusive approach to body shapes and sizes. The high-waisted style was celebrated for its ability to flatter different body types, offering comfort and support compared to traditional low-rise swimwear.

The 1980s and 1990s saw the popularity of different swimsuit styles, often characterized by higher cut legs and more daring designs, while the 1970s trend focused on more boyish and minimal designs which did not prominently feature high-waisted silhouettes. These decades did not emphasize the retro revival aspect that defined the 2010s. Hence, the answer is firmly rooted in the context and cultural trends of the 2010s.