What is nude calenders?

Nude calendars are calendars that feature images of people posing without clothing. They are typically created for charity purposes or as promotional items. The practice of creating nude calendars dates back to the early 20th century, but gained popularity in the 1970s. The most famous nude calendar is the yearly Pirelli Calendar, which features top models and celebrities posing nude for artistic black and white photographs. Nude calendars have been controversial, with some criticizing them for objectifying women and perpetuating negative gender stereotypes. However, others argue that they are a form of artistic expression and self-confidence, and can also raise money for important causes.