She works out of her lingerie set

Dark hair, a matching set, and a slow route out of it. She works each piece loose in turn, letting the bra go last and holding the pose once it does. Her full figure gets the attention, and her hands stay busy after the final garment is gone.

Plenty of films treat the strip as a preamble. Here it is the structure, and the shift into self-touch reads as continuation rather than a change of gear. She holds the lens throughout, which does more than any amount of polish.