Now trending: National Cleavage Day

Started in 2002 and held at the end of March or early April each year, it’s intended as a light-hearted celebration.

Wonderbra is the sponsor, and the Huffington Post reports the company saying: “We view this day for women to acknowledge that their cleavage is something unique and encourage you all to be proud of it.”

Take a look at social media reaction ranging from support to complaints of sexism, and see what men contribute to the conversation.