Is this an ok oufit to a outdoor concert? what should i do to my hair?and makeup?

i'm thinking of wearing this utfit for a band festical happening at school..is it ok? a sleeveless baby pink top from gap,and dark blue jeans..do you think i should wear black pants instead? and pinkish beige strappy kitten heels.. what should i do to my hair?and makeup? i'm 5'5'' about the clolour of my avatar and slim..i have long black hair(like bra length and layered,shortest layer at my chin) thanks