You are in proportion with slender often toned arms and legs. You have little to no wait definition, though you are fortunate in that you can wear most styles. High-necked tops, skinny jeans and styles with volume and print were made for you! You can create the illusion of a waist by adding volume to the top and bottom half with print, colour, ruffles, frills & bows which will create shape and interest. Adding a belt or tucking in will add waist definition.
Avoid spaghetti straps as these can increase your lean look and baggy, boxy styles can drown your slender frame. Consider wide-leg trousers and if petite look for high-waisted styles as these will elongate.
Accessories, shows and bags in proportion to your shape and height will work better — large styles can overwhelm your frame.