I have really small boobs and i bought these to fill out my wedding dress. The box says its meant for all sizes but these cups are a bit large and stick out of all my clothes and bras.
When I did manage to fit them into my clothes with out being visible, they still looked weird. They tend to slide around a bit which is expected, but they look really weird with the nipples which end up pointing inward or in opposite directions.

These things did not enhance my appearance at all, they made my slim body look matronly since these fake boobs are a bit heavy and sag. I think it made my fit 25 year old body look more like a late 30s out of shape, had a few babies body. The transformation freaked me out and actually made me feel a little depressed.

Anyway, I think it's just this brand that has this effect, my mom and my grandma have these but in a different brand, ive tried them on and they weren't as saggy, didn't slide around as much and over all looked natural.