For general purposes, however, most people look different from middle school to senior year of high school due to their glow up.
Please note that glow up does not mean you should wear a bunch of makeup at 13, so that you suddenly look like a senior in high school.
Your glow up must be natural, and it is a necessary phase in life.
Urban Dictionary defines a “glow up” as an “incredible transformation,” or “to go from the bottom to the top to the point of disbelief.” Essentially, glow up is another phrase for going through puberty, but the glow up process focuses on the improvement of physical appearance, individual style, overall attractiveness and maturity, in contrast to puberty, which basically focuses on physical and biological developments, such as facial hair for boys and periods for girls.
However, if you are one of the people that has a permanent babyface and never seems to age (um, congrats), your glow up will probably only apply to your maturity and style.
You’re also finding your individual style, like what clothes and colors you like best on you. You know when your glow up is complete or if you are nearing the end of your second phase if you feel more confident in yourself and if you are more calm and content with what you look like and how you act.