Chiffon skirt closure

Hi! I’m planning to make a gathered waist long chiffon skirt but I’m not sure what to use as the closure.

I don’t really want to use elastic because I find it makes it look a bit more casual. So my initial thought was a zipper. But a zipper just seems like it would be too heavy for chiffon and you’d see it because the fabric is fairly transparent.

What have you used as closures for chiffon? Or is there a trick to doing zippers?