A: What a lovely dress you're wearing.
   - 정말 멋진 옷을 입고 있군요.

B: Do you like it?
   - 마음에 드세요?

-> You look stunning (in it)! 너무 멋져요.
-> I fell in love with it at first sight. 보자마자 사랑에 빠져버렸어요.