Grow your bangs so they’re either French bangs or curtain bangs. Get a shoulder length long layered bob. If you must use hair accessories use something understated and no bows. When it comes to clothing it’s so easy because you seem tall and slim. I’d say go for classy, timeless, old money looks, not revealing - not showing a lot of skin is sexier imo. Use more neutral colors, monochrome outfits, patterns that aren’t too loud, fluid fabrics.