I usually stay away from plunge bras for a myriad of reasons like fear of falling out and worry about BAD quad-boobing, but I LOVE the Stella Bra. The lace isn't itchy. The colors are beautiful (I have the lilac and the rose pink). The shape is phenomenal and I feel incredibly sexy. I was never able to wear Victoria's Secret bras or anything that made me feel really young, but this bra is a solution to that!
I don't particularly love that there's only 2 hooks because I feel like that's not a lot of support for someone of my size. The straps do leave indentations at the end of a long day, but it's not particularly painful. I don't fall out if I bend over too many times in a row. My shirts don't cling to the bras from what I've seen. There is a little bit of slippage if I move a lot, but that's to be expected of a bra with less constraint.
Overall, I'm VERY happy with this bra and the construction style. It's comfortable within reason of the style (I'm used to balconettes) and it makes me feel young and sexy as I should at 21! I would definitely recommend this bra.