She's a strange one

Cust: I've got this bra but it's too small, I come over the top in it.
EM: ok, let me get you the bigger cup...
(EM gets it, the satin plunge and cust tries it on)
Cust: that's better, let me just try my top on, as I have loads of shirts that are low, and I'm not buying new shirts!
(cust puts on her scoop neck top and pulls it down so that the scoop uncovers half her boobs, lo and behold, you can see the bra.)
Cust: see, the smaller one didn't do that...
EM: ok...
Cust: (puts her hands on her hips and the top moves up covering her bra. Cust pulls the top back down) I don't know what to do now... The others didn't show but this is so comfortable... I've got another one, the alana, the wires are too high. You see when I have a nap in the day I have to take it off, it's so uncomfortable, I have trigger points under my arms and I don't want to set them off...
EM: we could try a different style? Are your other tops as low as this or are they v-necked?
Cust: there all scoop necked like this...
(as cust is talking, her top goes back up to cover her bra)
Cust: well my top keeps riding up here and that's fine... Maybe that's where they sit? I'm going to take the bigger one but keep the smaller one too, so I can try them with my shirts at home...