A swimsuit is not a tank top...or is it? Researchers are split. It covers the bodice, and typically has two straps - in a full-body suit or bikini varieties alike. Sooo, you know, technically it’s fair game. I’ve already ruled that leotards are fair game. So please enjoy Megan Rapinoe in her swimsuit/unrestrained tank top glory as the first openly gay woman in the Sports Illustrated Swimsuit Issue. 
Yes, yes - I know the swimsuit issue is gross, but LGBTQ equality is striving for gross things straight people can do, achieving them, and making them cooler in the process. I mean, we already did it for marriage. (Kidding...kind of...but not about a swimsuit being a tank top.) 
Anyway, my point is you could slice ham on those hip bones and do your laundry on them abs. 