-1st look - "baggy white tanktop, midriff, dark blue shorts,"

Since both looks have a white tanktop/jersey you may need to add some weight to make it solid white i.e. "baggy white tanktop:1.3"

-2nd look - "plain white basketball jersey with blue trim, midriff, plain white basketball shorts with blue trim,"

-3rd look - to give her a more comic style look: "plain yellow tanktop, plain purple shorts"

you can also use "plain yellow tshirt"