The 2020 calendar sales will raise money for the Chernobyl Children's Lifeline, to help those still suffering as a result of the Chernobyl nuclear disaster.
Photos show the frisky farmers doing their usual work - only completely in the buff.
Pictured is Vikki as Miss February posing with a cow Now two calendars are shot every year and Nicola estimates sales have totalled more than Β£100,000 for various charities.
Nicola de Pulford, explained that she's been creating the calendars since before the roaring success of 2003 film Calendar Girls - which is based on a true story of a group of middle aged women from a Yorkshire Women's Institute who shot a naked calendar to raise money for Leukemia research.
Watch out for cow pats! Pictured is Charlie starring as Miss May One image shows Miss November, Ali, down on one knee while feeding young cows and wearing nothing but wellington boots.
All the models also get paid but they don't usually know this when they apply.