i think the proper and better looking way is garter over your panties but then you can't take off your panties in the moment so for practicality, wearing them over makes more sense. So if you are just modelling them garter over but if you know you'll want to easily take off your undies then garter under
I mean, ok, let's be serious, it's 2016... no one wears open-bottom girdles or garterbelts for functional reasons anymore.
If I'm wearing one of these, this means I'm on a date night with my husband, and I've decided to go full-on "retro" -- usually to go with some speakeasy theme (there are a few AWESOME Roaring '20's-themed speakeasy bars here in LA... a couple of which are authentic holdovers from the Prohibition era).
I wears mah garters, and I wears the rest of mah foundation garments... and I goes commando. Sittin' like a lady. The fact that there's nothin' at all underneath that garterbelt? Well, that's just our little secret. <3 And it's fun af to tease my husband all night by crossing and uncrossing my legs under the table. Among other things.
I mean, srsly tho. If yr wearing one of these things, it MUST be part of sexytimes, right? Don't bother with the panties.