Resisting Denim
Denim can actually make you look younger, especially by helping you hide certain areas you prefer not to highlight. A darker wash can be especially helpful with that. You can also dress up denim, especially if you wear it with some heels or a blazer.
Chunky Jewelry
About a decade ago, costume jewelry was all the rage. Now, it just simply has fallen out of favor. You should avoid bubble necklaces or chunky jewelry if you don’t want to age yourself. Dainty and delicate pieces are preferable, like tiny stud earrings or bar necklaces.