When someone says, "You look similar to X," and you are younger than X, you can respond in a friendly and polite manner. Here are a few possible responses:
Thank them: You can simply say, "Thank you! That's very kind of you to say."
Agree and acknowledge the resemblance: You might respond with, "Yes, I've heard that before. People often say we share some similarities."
Add a friendly remark: Inject some positivity into the conversation by saying something like, "X must be a good-looking person then!"
Humor: If you want to add a touch of humor, you can reply playfully, "Well, I guess I'll take it as a compliment since X looks great!"
Mention your age difference: If it feels appropriate, you can casually mention the age difference with a lighthearted tone, "Oh, that's nice to hear. But I think I'm a bit younger than X."
Shift the topic: If you're not comfortable with the comparison or prefer not to discuss it, gracefully change the subject to something else, "Anyway, did you catch that new movie that just came out?"
Remember that people often make comparisons based on appearances, and it's usually meant as a simple observation without any negative intentions. Responding positively and gracefully can help keep the conversation pleasant and light-hearted. If you feel uncomfortable with the comparison, it's okay to politely acknowledge it and move on to other topics.