I love Wynath. Not only is it the homeworld of Lighting Lad and Lighting Lass, not only is it a planet full of twins, but it also a planet with a very relax dress code. Wearing only adult diapers seems to be the norm, even the women are shirtless! These are scans from Legion of Super-heroes Annual #3 (1992)
If anyone knows any other Legion issues where there is shirtlessness, please let me know so I can create a wishlist. Thanks!
And here's a scan from Legion of Super-heroes #262 courtesy of Christian: