Starts off in a black trouser suit with white blouse unbuttoned low, breasts straining against the tight shirt, one pose in particular when Chandler shoves a spoon with cheesecake in her mouth, but you have to be quick to catch it. Sadly there's no nippleage.
Next scene is a bulky blue sweater, so fastforward to ... a very tight figure-hugging but dark top for the rest of the episode. No nipples, except for a couple moments out in the hall, but the top is very tight and hugs her breasts and abs. There's the occasional strip of bare midriff, and glimpses of the bare tops of her breasts when she leans forward to cut the cheesecake.
In the final scene there's some fine views of her bare lower back and top of her butt as she kneels on the floor eating the spilled cheesecake. No sign of any whale tail or panties even though her jeans have ridden down real low! Surely not commando???