These are NANA shirts, based on Yazawa Ai's popular shoujo manga. It has a cool "concert shirt" look, and they are girl-size tees. The WHITE shirts come in MEDIUM and SMALL, and the LEMON shirts come in MEDIUM only. (the size is based on American sizes)
If you're interested, contact me ASAP! My email is firstname.lastname@example.org. Shipping to anywhere in the U.S. is only $3.50. I can also ship internationally for $10.