When someone compliments you by saying, "You look nice in that dress," it's always polite to acknowledge and respond to the compliment graciously. Here are a few ways you can respond:
"Thank you! I really appreciate your kind words."
"Oh, thank you so much! I'm glad you like it."
"Thanks! I felt good wearing it too."
"That's so sweet of you to say. Thank you!"
"I'm flattered by your compliment. Thank you!"
"Thanks for noticing! It's one of my favorite dresses."
"I'm glad you think so. Your compliment made my day!"
Remember to maintain a friendly and appreciative tone while responding to the compliment. If you want to engage in further conversation, you can ask them about their thoughts on the dress or if they have any fashion tips. Graciously accepting compliments is a part of good social etiquette and shows that you value and respect the kind words of others.