I go twice a week. First session is during my work week, so I wear my work clothes. I work mostly with children, so I tend to dress business-casual, or even nice jeans/blouse.

On Fridays, when I do not work but see T, I let my inner kids dress the body. They like the big T shirts or even pajamas to wear so that they're comfy. Or they wear what ever new outfit they love to show it off to her.