/cgl/ - Cosplay & EGL

So, anyone have any recommendations for shapewear for lolita? I don't know if I need to be looking for a corset or will something tight be enough. I got a new dress this morning and despite being well under both the brand and seller measurements, it doesn't fit. The problem area seems to be my ribs since I have a fairly wide ribcage, so I think a corset might be better? I'm trying to lose a little weight anyway but I think I might need some help. Help me /cgl/, you're my only hope.