take your breath away

To cause someone to feel intense, typically pleasant, astonishment or awe. Did you see Kathy's gorgeous new dress? It took my breath away. The play is stunning—it will take your breath away!

COMMON If something takes your breath away, it amazes and impresses you. `Tell me again about the picture.' — `It's beautiful. It's so beautiful it takes your breath away.' He had never believed he would come to such power. The more he realized it, the more it took his breath away.