Why is my Minecraft skin bugged?

Ke
- in Skins
1

Here my skin has white stripes on the shoulders…

Why is my Minecraft skin bugged

But not with the skin editor…

Why is my Minecraft skin bugged - 1

How do I get rid of the white stripes and why are they even there?

Po

This is because the skin is a "slim model". You have to select "Slim" in the launcher.