Personally, as an overweight adult skater, what I'm most comfortable in for practice, for both ease of movement and aesthetics, is turtleneck or t-shirt, tights, and shorts. I do wear skirts or dresses with shirts over them for practice. For competition or practice, I need a really well cut dress with sleeves, and I've only been able to find one or two that fit well enough. But if it were all about athletics while looking reasonably well put together, I'd be happy if someone would invent attractive competition shorts, with a nice tight matching shirt that will stay down.