Hey i m 5'1",fair complexion nd little bit round face.and slim.plz help me guys to improve my dressing sense?

m also losing my confidence due to poor dressing sense.as whnevr i wnt 4 sm marriage or party..it makes me feel ugly,,nd girls of my age really luk beautiful ..i feel like m is a big dumbo...no place is thr 4 me in ths world..plzzzz guys help me...