The models, including snowboard teacher and two times world cup race winner Julia Dujmovits, 25, forgo their usual thermal layers to pose in the cold temperatures.
The pictures were shot by Hubertus von Hohenlohe who said he travelled to 'the best skiing hotspots in the world' to create the calendar under the artistic direction of Thomas Ebster.
Bracing: Ski instructors forgo their usual attire to pose for a 2013 calendar
Chilling out: The photos were shot at some of the 'best skiing hotspots in the world'
Class act: The women are all ski or snowboard instructors
Some of the pictures show the women in just knickers and ski boots but Thomas said they were criticised for not showing enough nudity.
Sending temperatures rising: The calendar was shot by Hubertus von Hohenlohe who said this is his 'hottest' calendar to date, despite the wintry setting
Scantily-clad: But artistic director Thomas Ebster said they were criticised for not showing enough flesh
Global project: The models come from ten different countries including Germany and Lebanon
Snow angels: The women braved the cold to strip off for the shoot
Calendar girls: A version using male ski instructors as models is also planned
And in the interests of equality, the pair are also shooting a second calender featuring male skiing instructors including five times ski world champion Marc Girardelli.
Mountain air: The pictures were shot at winter resorts around the world and are sure to boost tourism