Probably shorter than long. Long thin, fine hair just looks stringy, I think. Maybe a cute bob?
I have fine curly 3B hair but thinning-what is a good hair style
try not to brush or comb your hair. and whenever you are getting knots out, detangle with your fingers, not a comb. there are some vitamins/supplements that are great for getting thicker hair. anything with biotin in it usually produces great results: http://www.naturallycurly.com/curlreading/kinky-h...Last but not least, a 'lob' (long bob) might be cute. add bangs and use a texturizer to pump up the volume in your hair to mask the appearance. and stay away from tight ponytails!