I'm hanging out with a few cute guys tomorrow night; i have a question...it's a "girl" thing?

first of all, i'm not a slut/ or anything like that...however, i just wanted some other girls/womens opinions on a "girl" thing...so im just wondering about what type/color pnties i should wear. because i know that guys like to see that stuff (im not going to dress trashy i swear!) im just goign to wear a tanktop that goes down to the top of my jeans, so when i sit down, or whatever, theyll show and maybe the guys would be turned on lol...so what would you wear if you anted to turn on/impress/or even tease a guy when it comes to pnties?