Moms displaying their boobs is one of my favorites
My wife used to wear very loose neck shirts to have easy access for breastfeeding. She would just reach in through neckline, pull one out and feed it to the baby. As a result, most of her shirts became very loose and provided plenty of observation space any time she leaned a bit.
Now she had another thing going, her long sensitive nipples were hurting in tight fitting bras and also her boobs varied from B cups when empty to almost D cups when full (as you can see in my album). So she wore D cup bras and often had a lot of space left in the cups. This meant that under certain circumstances, if someone was in the right position when she bent over or kneeld down, one could get more than a glimpse of her nipples accompanying the full cleavage display.
Of course she was not the only DB mom on the playground and I did enjoy a lot of the summer time
What I keep wondering about is, whether her displays are being 100% unintentional or if she does not care or if maybe she does like to show some skin, since she is always "complaining" about guys looking her over.
Here's something to paint the picture, although without a nipple peeking out.