I don't ever recall parent being nude with me for bath. But I recall being in bath and parents bathing me.

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And at one point, I told them I was old enough to do it myself, and they reluctantly agreed after a few times my asking.
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When the kid is a baby, it is probably good for the parent to be in the bath with the baby to make baby feel "at home" close to the parent and feel more comfortable in the water since the parents are also in the water.
<p><br> and being in bath with baby implies being naked.
<p><br>I think there comes a certain age where a dad shouldn't bathe with daughter, but could still bathe with son (and vice versa with mother), and then later on when it isn't really good to have parent in the bath with the kid. For one thing, as they grow and start to sit in bath, presence of an adult woudl make things quite cramped in the bath.
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If your goal is to get your kid as autonomous as possible in the bath, then the time to stop bathing with kid will come naturally for you. Then you just bathe kid from outside the bath, then just supervise kid and let kid do it him/herself.
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