I wear tights or pantyhose under a bodysuit, unless of course the bodysuit is doubling as panties which it usually isn't in my case. The practical reason for this is that it keeps the tights/pantyhose from slipping down as they tend to do. Bodysuit does help your pantyhose in position from sliding down. it also looks better for appreaance.
覺得好的就按一下感謝吧~~