Ugh How Can You Get Nail Polish Out Of Clothes
Try using nail polish remover first, but make sure it is non-acetone based because that can fade the color of your clothing. Try a little spot of the polish remover somewhere on the clothing where it can't be seen when you're wearing it, just in case it messes up the color of the clothes. If it doesn't, then dab a little bit of polish remover on the spot with a q-tip or cotton ball until it comes out.
You can also try hydrogen peroxide in place of the polish remover or spraying a combination of hairspray and water on the spot.
That has happened to me so many times, and I've never been able to get it out. Same with acrylic paint. >.>