Breast Root help?

Hi! Recently I added another insecurity about my boobs: their height. From this picture I think I’m a medium root, what do you think? Is it unattractive? Like mine are NOT saggy, but it still doesn’t look good to me, all of my friends have those high pretty boobs so …
Also I’ve read somewhere that the average root for women is between 5 and 7 inches lower than their armpit, but mine is 18 cm (sorry I don’t know how much it is in inches). Is it low?

And ladies, what is your breast root?

(Breast root is basically the area of your breast that attaches to your body)
Breast Root help?
Breast Root help?
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