A popular one is making your head smaller(more narrow, smaller jaw) in south korea.
Another example is Japan that has had purikura filters that increase eye size for a long time.
It's so widespread in Japan that most puri photo booths actually default to making your face flat and white like a paper plate, and making your eyes cartoonishly big. People just expect them to do that.
Just take a scroll through the InstagramReality subreddit.