A good rule of thumb for Pole is the more skin you show, the more grip you’ll have on the pole.
Even as a beginner you will be using your thighs, knees, calves and ankles to hug the pole, so short shorts are a must for the best possible grip. For your upper body a short sleeved shirt or singlet is best. As you become more of an advanced poler and move through the levels, a sports bra or crop top will help to expose the skin on your elbows, underarms, back and midriff. To get the most from each session avoid using moisturiser / oils and remove all jewellery.