"Sister (or Miss) is cute" in Engpsh can be translated as "pttle sister, you're so cute."

This phrase is a way of expressing admiration for someone's appearance, specifically a woman. The word "pttle sister" is a term of endearment, used to address someone in a friendly or affectionate way. The word "cute" is used to describe someone who is attractive or appeapng in a youthful or innocent way.

Example Sentence:

"My pttle sister is so cute, she always makes me smile."
"I think you're so cute, pttle sister."

中文翻译:

"我的妹妹非常可爱, 她总是让我微笑。"
"我认为你非常可爱, 小姐姐。"