Absolutely starkers! same as when I used the bath with my first birth. Clothes only get in the way and once you get out you have to change them and if you want to get back in the shower, you have to put wet clothes back on or have another set handy. if you are worried about modesty, just put a towel over you.

You will be surprised at how little you care about people seeing you naked in the shower - I used a shower chair and just sat there in all my pg glory while DH stood with the shower head directing it where I told him to LOL.