That’s a shame @Ginger_Adonis. If you can afford to, i would buy a few items at the same time and send them back - it gives a better chance of something fitting and makes me feel more positive than lots of separate orders. Possibly just me though 
If you want to give us a bit more info about your wife’s size then we could give you some suggestions if you like? I’m a 34 D on top, size 12 top and 14-16 on the bottom. Also, what colours and styles she likes?
The bra set that I mentioned here is lovely, stretchy, shows off my boobs (hubby loves it!) And it covers my tummy but still shows off a bit of skin. Plus it’s super stretchy and comfy. I bought this when I was a size 16-18 and it still fits now that i’m a couple of sizes smaller 