YOU SAID:
i will be getting married to him in that ugly green dress
INTO JAPANESE
私はその醜い緑のドレスで彼と結婚します
BACK INTO ENGLISH
I will marry him in that ugly green dress
INTO JAPANESE
あの醜い緑色のドレスで彼と結婚します
BACK INTO ENGLISH
Marry him in that ugly green dress
INTO JAPANESE
その醜い緑のドレスで彼と結婚する
BACK INTO ENGLISH
Marry him in that ugly green dress
That didn't even make that much sense in English.