I have one of these in size 22, now too big so I wanted to get a 20, but out stock. www.marksandspencer.com/firm-control-panelled-full-slip/p/p22291385
They don't have it anymore in that size - any suggestions as to something similar? Has to work as a vest also for modesty at work when I am wearing v-necked things, so those below the bra ones are no use!