"You look great today" 是一句常用的表扬话语，意思是"你今天真好看"。这句话的来源可以追溯到英语中表达赞美的语言习惯，在日常生活中经常使用。
例句：
"You look great today, did you do something different with your hair?"
"你今天真好看，你的头发做了什么变化吗？"
"I love that dress on you, you look great today."
"我喜欢你穿这条裙子，你今天真好看。"
"Wow, you look great today! Did you lose weight?"
"哇，你今天真好看！你减肥了吗？"