Clothing with glitter
Glitter is synonymous with drawing attention to make you look way younger than you are. It’s a desperation act and it won’t go well.
Large prints

These articles of clothing should only be reserved for the much younger generations. On adults, these can overwhelm your figure and draw unneeded attention to various parts of your body.
Store-brand logos
Everyone knows store-brand clothing with the logo printed on it is a teen thing. While there’s nothing wrong with shopping there if you want new looks, just be sure to avoid clothing that makes it obvious where you get your clothes.
Not dressing proportionately

This also can draw unnecessary attention to you if your top half isn’t proportional to the bottom.
Wrong underwear
Similar to bras, these can misrepresent body proportions too. Even though people won’t see these underneath in most cases, it’s still a good idea to have them match the overall outfit. Also wearing “granny panties” or worn briefs won’t go well either.