My daughter wants to wear a long t-shirt with just bathing suit bottoms on under it and a bathing suit top should I let her?

the shirt covers it all nothing shows but her legs and arms. it's a black t-shirt so nothing shows
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+1 y
she want's to be able to take the shirt off after school while walking home
My daughter wants to wear a long t-shirt with just bathing suit bottoms on under it and a bathing suit top should I let her?
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