My daughter wear bikini I don't like?

I say to her Miranda please come out your room, and she refuse. But I manage to get her out, and she wearing itsy bitsy teenie weenie yellow polka dot bikini. I was offended she choose to wear such modest garments. Lucky, it was her first time to wear it so I still have many time to take back to shop. How do you prevent your daughter to wear such clothing? Shukran