well.. be confident, have a good walking posture (trust me it helps), upgrade ur facial appearance (style up ur hair, make urself clean), and the way u dress. make sure it conceals ur weaknesses and accentuates ur best features.

And of coz... ur personality must stand out.

there's always a way. trust me! i know many plus-sized girls who know how to dress up so beautifully according to their size.

wear buttoned shirt.. look smarter that way..try to find clothes that hav vertical lines instead of horizontal..

do something about urself if u know it's the weight that's bugging u