Well, I had my first frenum piercing a few years back, and I've slowly been able to stretch it up to a 0 gauge! Now, I'm back for more. I just got pierced a second time just below the first one. Once it heals, I'm going to stretch it, and incorporate an "orbital" by looping one ring through both piercings. More pictures to come, for now, this will have to do. (The biggest one is a 0 gauge, and the smaller is an 8 gauge.)
NOTE: Do NOT let anyone freak you out about this piercing. It stings for less than 5 seconds during the piercing, and is completely worth it!