[Rupert]

Enchanted items lose their enchantment when broken, so those items would presumably lose their enchantment, and be non-magical, even after they're repaired.

However, one might be able to make a case that the bikini is not truly broken, given a simple repair can fix it. I'd be sympathetic to the argument that a proper repair by a skilled tailor, or using the Repair spell would allow it to function again. The choker, not so much.