For Mariah Carey, it's walking her dog wearing only a bikini in the snow, apparently.
The former American Idol judge is celebrating the holiday in Aspen with her husband Nick Cannon and their twin babies and shared this shot of herself in a skimpy swimsuit despite the cold temperatures in the popular ski town.
"It's a just a tradition #aspen #coldyethot," Mariah Instagrammed.
The "All I Want for Christmas Is You" singer also posted a pic of herself in the same red bikini and heels posing in front of their Christmas tree.
"Warming up for the hottub moments!" the 43-year-old captioned the sexy shot.
Luckily, Mimi kept her clothes on for other Aspen winter activities, such as sledding with her kids and ice skating with her hubby.
What do you think of Mariah wearing a bikini in the snow?