I really can't think of one. As grownups, the same problem occurs. We still refer to women's clothing, accessories etc as "girly" if they're a bit pink and childish but there's no adjective for the equivalent clothing etc for men. Adult men's clothing can be described as "blokey" but we would be more likely to use that if a woman was wearing masculine-type clothes.
I should point out that technically, "girly" should only be used to refer to people, not to inanimate objects.
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