i have this kind of problem 2 (im 151cm n 40kg,underweight..i noe..) i m a very confidence person,,but i always wna have a plumpier body..its sexier..but,,i got my butt to save me..my upper part is so~ skinny..especially my shoulder n bust..huh..
my advise is do wear tops with ruffles or more details on ur shoulder n bust area..smocking will do great 2enhance ur bust.
n try short skirt n short pants as it'll make ur legs look longer.. also wear wedges n heels..
AVOID long dress..hehe (cos i look funny wif long dress)