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Assuming this was taken professionally, they would have tents on site with blankets, hot drinks, anything to warm up between shoots which themselves would be done as quickly as possible. Kate Upton did an Antarctica photoshoot with the behind the scenes on YT: https://www.youtube.com/watch?v=IrBpc0766vs kinda impressive how much work goes into it.
Other than that, if it’s ameteur, I hope they prepared properly lol
I was thinking that maybe some editing happened to achieve this. To be honesty it sounds like way more work than what it’s worth. Good picture through.