Easy and pretty fashionable!
Just tape it to make the stripes.. tape the whole side you want the stripes, then remove the ones youre painting white.. wait for it to dry and give it a second coat.
Remove the tape and paint the red.
For the stars, use the star shape cookie cutter and paint with the white.
You can paint it blue before doing the stars if you want a more vivid colour.
Do the same ting on the back pockets and you're done!
You can also add some studs for a more rock'n'roll look!