For those asking the question about women’s gymnastics leotards - the German team have been using a unitard since Tokyo (at least, not sure about before), but not all the athletes like them. In qualifications I think only one of the German women wore the unitard, but they did all have the option. They are allowed in the rules
They have to be really careful about the design because without enough contrast between the leg and body it can make it very hard for the judges to score correctly. Someone wore an all black one at the German trials and it definitely knocked down the wow factor of some of the skills.
From what I’ve read, most elite gymnasts just like wearing the leotard because that’s what they are used to and have competed/trained in for years. Under British Gymnastics rules, girls are allowed to wear shorts over their leotards now, whereas in previous years they would get a penalty for it. So maybe it will change over time.
I also remember seeing an interview with Holly Bradshaw (GB pole vault) who ended up with serious body confidence issues due to having to wear skimpy kit. For Rio (I think, but might have been London) she wore the GB rowing onesie so she would have full coverage and longer shorts, as she had been able to push to have the choice. Shame she didn’t have it before.