I'm guessing a lot of people on here have had this problem at some point. What underwear do you wear with a Cat suit that won't show up? I was thinking of maybe wearing spanx type things to cover up the underwear lines? And maybe a smooth crop top? Any advice?

I wear Lycra unitards alot like superhero costumes and I tend to wear Control underwear from anywhere really I mean mine were primark and they are 99 percent invisible under tight lycra which can be very unforgiving with underwear showing up.

you can buy seamless knickers, I wear them under tight clothing, you can buy them in m&s x

Thanks guys! I shall go shopping!