Gracias.
Disculpe,
me
queda
grande.
¿Tiene
una
talla
más
chica?
GRAH-syahs. dees-KOOL-peh, meh KEH-dah GRAHN-deh. TYEH-neh OO-nah TAH-yah mahs CHEE-kah?
Thanks. Excuse me, it's too big on me. Do you have a smaller size?
"Me queda" means "it fits me" — use "me queda bien" (fits well), "me queda grande" (too big), or "me queda chico" (too small).