Just thought I would share my first experience of wireless bra shopping in Marks & Spencers. For years I have just bought this bra on repeat - https://www.bravissimo.com/products/envy-bra-pn116/#black-pn116blk
I spent a good couple of hours in trying different sizes on and thought it might help others to see what sizes I ended up buying.
I am a 36GG and had to try a lot of wireless sizes on to get one that fits correctly. My size is from bravissimo, I didn't need M&S staff helping or measuring.
There's one I couldn't get in the size I needed so the size is written on the picture.
I was very happy to get 2 wired bras for less than £36 a go. £20 a bra is unheard of for me!
I've always been dubious about non wired bras, so thought I would share in case this helped someone.