In 2012, filmmaker Lina Esco began working on Free The Nipple, a film about a group of women determined to end the censorship of women's breasts.
These toys provide a different, more intense sensation than simply caressing or pinching your partner's nipples with your own hands.
Here's a look at the respective sizes of 33 famous women's prized assets.
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It's also about ensuring that women have ownership over how they choose to present their bodies to the world.
See what we did there? Women are more prone to problems with their breasts.
Not everyone is into rougher breast play, but some people are! In a study conducted at the University of Vienna, researchers found that large breasts were about 24% less sensitive than small ones.
Check out some of the most memorable FreeTheNipple moments of the season.