Thanks for the responses,
@BrendaP that was a very helpful link.
My bust changed size and shape a lot through peri menopause/menopause which also coincided with some weight gain.
I was a 38B and am now a 40D.
I don't wear proper bras at all, just bralettes, non wired comfort bras from Sainsburys and those pull on ones.
But its not doing me any favours in the silhouette department so I wondered what might.
I can't wear anything with a nasty polyester covered seam across the nipple, it just itches all day, so I turn those bras inside out! (a bra is badged as 100% cotton and then its got the poly inside the cup!).