YOU SAID:

your dress is the ugliest one i've ever saw

INTO JAPANESE

あなたのドレスは私が今まで見た中で最もgliいものです

BACK INTO ENGLISH

Your dress is the glitest thing I've ever seen

INTO JAPANESE

あなたのドレスは私が今まで見た中で最もひどいものです

BACK INTO ENGLISH

Your dress is the worst thing I've ever seen

INTO JAPANESE

あなたのドレスは私が今まで見た中で最悪のものです

BACK INTO ENGLISH

Your dress is the worst thing I have ever seen

INTO JAPANESE

あなたのドレスは私が今まで見た中で最悪のものです

BACK INTO ENGLISH

Your dress is the worst thing I have ever seen