AITA for tricking my sister into cutting off her hair?

A teenager reached a breaking point after years of feeling like she had lost her own identity. Her older sister’s constant imitation of her appearance, habits, and interests had gone from mildly annoying to deeply unsettling, leaving her feeling invisible and unheard.

After repeated attempts to address the issue failed and her concerns were dismissed by her parents, she took matters into her own hands in an unconventional way. What followed sparked anger within her family and left her questioning whether she had crossed a line. When she shared the story on a social network, readers quickly weighed in on whether her actions were justified or unnecessarily manipulative.

‘AITA for tricking my sister into cutting off her hair?’

The issue began with years of constant imitation that slowly erased her sense of self.

My (17f) sister (20f) has copied me a lot the last few years. She asks where I got clothes from and buys the exact ones, she uses the same langue,...

she wears the same makeup i wear. Family and friends are confused and strangers ask us if we're twins. I expressed several times that this makes me uncomfortable, both to...

I don't wear the clothes she has anymore, but she will just buy whatever new clothes I buy. I don't post much on social media anymore, but she still knows...

Concern turned into frustration when no one took her discomfort seriously.

At the start I was worried about her mental health, I tried to get her to talk to me, but she claims she's fine. My parents refuse to do anything...

A social media post triggered unexpected consequences and family fallout.

So I posted on social media that I was getting a pixie cut (very short hair). I didn't. She did. She's very angry and says that I manipulated her into...

My parents are upset. Though I don't want to upset anyone, I'm glad I look like a separate person again.. AITA?.

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TLDR: sister copies everything, made her think I was cutting my hair, didn't. She did.

Edit: apparently a similar thing was posted on here too, apologies, I didn't know. I'll read through those comments and delete this if it's too similar.

Sibling imitation can be harmless in early childhood, but when it persists into adulthood and crosses personal boundaries, it often signals deeper issues. In this case, the younger sister repeatedly communicated her discomfort, yet her concerns were minimized, leaving her feeling trapped in a dynamic she could not escape.

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From the older sister’s perspective, copying may stem from insecurity, identity confusion, or a desire for closeness. However, refusing to acknowledge boundaries and dismissing the emotional impact on a sibling can quickly turn admiration into intrusion. The parents’ decision to label the behavior as harmless may have unintentionally reinforced the problem.

From the poster’s viewpoint, the act of posting about a haircut appears less about cruelty and more about reclaiming individuality. While the method was indirect, it highlighted how extreme the imitation had become. The broader reaction shows a social consensus that personal identity deserves respect. When repeated communication fails, people sometimes resort to symbolic actions to be seen and heard, even if those actions provoke conflict.

Here’s the comments of Reddit users:

Many users supported the poster, agreeing that her boundaries had been repeatedly ignored.

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StAlvis − NTA OP is never the a__hole.

DParadoX − NTA just ask why did you want a pixie cut in the first place? if she answer she think it looks nice, then how is it your fault?...

[Reddit User] − Info Are your parents getting your sister help from a professional? The situation sounds very abnormal, and she probably needs help with her mental health.

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Endonium − **NTA**. Your sister's been crossing boundaries for a while, and it's clear that talking hasn't worked. Sometimes you gotta resort to creative measures to get your point across.

She needed a wake-up call, and while it might be a bit unconventional, it seems like it worked. Your parents need to realize it's not just harmless imitation, and you...

Some commenters raised concerns about the sister’s well-being and parental involvement.

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[Reddit User] − NTA - but your parents surely are. Your sister needs to develop her own personality and interests and they aren't helping by simply letting her continue to...

[Reddit User] − She’s lucky you didn’t post a pic using the bald filter NTA

[Reddit User] − Nta But lock your door cuz she will visit you with scissors at night.

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Others added humor or blunt advice to ease the tension.

Scary-Cycle1508 − Honestly? just lie. "What are you talking about, sister? I said i was thinking about it. And i was talking to a hair dresser and they kinda explained...

Ask your parents why they're upset that you didn't cut your hair and got a different consultation that you wanted. Maybe ask them how it is your fault that your...

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Could it be that your parents encouraged your sister to behave this way, by implying that you "looked like twins" when you were younger? maybe she got that stuck in...

blooger-00- − NTA. You’ve asked her to stop. She refused. You used your post to teach her a lesson she is likely not to forget any time soon. Also, it’s...

ReasonablyEdible − Just keep making stuff up on social. She will eventually not know what to do and will develope her own style

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This story highlights how imitation can shift from admiration to intrusion when boundaries are ignored. After feeling dismissed by both her sister and her parents, the poster chose an unconventional way to reclaim her individuality, even if it caused temporary conflict.

Where should the line be drawn between copying and losing one’s sense of self? Was the post a harmless wake-up call or unnecessary manipulation? Readers may find themselves debating whether intent matters more than outcome in situations like this.

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