No pun intended I hopeAs You Like It said:Why not try a pair of "boy cut" girls' knickers? Your's a slim lad...you could probably wear a 10, I'm guessing. They've got some nice, simple styles these days with great colors and fabrics, that won't give you a wedgie or show over the top of your trousers.
I don't do lace myself (makes my bum itch) but if that's your thang, then go nutty!