What does a boys gymnastic leotard look like with out shorts?

Little boys tend to wear nylon lycra or cotton shorts or lycra cycle shorts over top their leotards. However at 4 years old there is no reason why he couldn't wear the leotard on its own. However my little boy finds it more comfortable to wear a zone lycra leotard with no undies underneath and then lycra shorts over the top to hide any embarasing wedgies from his leotard

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A boys leotard is just like a looks just like a girls leotard. The only difference is that it is lower cut on the leg.