It's time to summit some mountains, so we've got the Mount H7, Mount F8, and Mount Kay Locations that you'll need to complete this challenge. You will need to get to the top of each of these spots and then dance at them to get credit!
The Yellow Chic Style Challenges have finally been unlocked, so you can go out and earn this set of styles. Unfortunately, it looks like Chapter 2: Season 1 has been extended again until February 20th, 2020. So, we will be waiting a little while longer for Chapter 2: Season 2 to be released.
Mount H7, Mount F8, and Mount Kay Locations
The three mountains you need to dance on are scattered across the southeastern part of the map. I'd do this one in Team Rumble because you get the glider that can be used to fly across to each of the mountains which allows you to dance on all of them in one round. Start at Mount H7 and then work your way to the west. Mount Kay is the tallest peak, so you can easily fly from there to Mount F8.
If you're having trouble locating these, check out this video that shows all the locations: