sweetness and light
温柔可人
A:What happened to Nancy? She's all sweetness and light today.
A:南希是怎么了?今天温柔又可人啊?
B:She's going to get married.
B:她要结婚啦!
A:No wonder! Who's the bridegroom?
A:怪不得,新郎是谁呀?
B:I don't know.
B:不知道。