A mature pose has brakes on it. She can show a shoulder, the line of a dress, bare legs crossed under the table, and still make the camera feel like the one taking a chance.

A thirst trap begs for an instant reaction. This is slower. Her chin is not tilted like she is waiting to be chosen. Her eyes are not selling urgency. Even in a bold outfit, her body language keeps the exit door open.

That is what separates the two. It is not how much she shows. It is how little she seems to need back.