Forever 21 is a store you can go to in person to see, if you want an online shop you can check Asianicandy, Etsy, Storet, Chicnova, Sheinside, ect.

I've seen a lot at forever 21. I also went to wetseal today and they also had them. Hope you find what you're looking for!

You can try forever 21 they have basic solid ones or ones with prints.