Stacked or whacked?
You stand there with arms crossed under your chest, and that move does exactly what it's supposed to — lifts everything up, pushes it together. Tank top stretched tight across big tits that don't need any help looking full.
Cleavage deep enough to get lost in, soft curves spilling over the neckline. The fabric clings to every round inch, showing off exactly what the question already answered.
Stacked doesn't even cover it.