Teen disinvites 15-year-old sister from her 17th birthday party after she wears her prom dress for a TikTok and completely ruins it: ‘The brat owes me 250 bucks’

Author image for Lana DeGaetano
Lana DeGaetano • "Show me to me please."
Feb 12, 2026 3:00 PM EST

When a familial relationship is already on the rocks, do you dive headfirst into conflict and tip the unstable ship over for good?

Or, do you remain on your best behavior until the familial relationship corrects itself? In a family dynamic, you feel comfortable speaking your mind. This is especially true for sibling relationships. When you're close in age with a sibling, arguments and general dissonance are inevitable. Let's just say that teenhood tends to exacerbate things…

The teen who shares the next story explains that her 15-year-old sister wore her prom dress without asking, and says that she's using it for a social media video. When her younger sister accidentally spills juice on the dress, the older teen immediately fires back: her younger sister is no longer invited to her 17th birthday party. The family is up in arms about the older sister's decision, and immediately takes the younger sister's side. Typical golden child result. Scroll below to read the full story.

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  • A young teen girl in a dress, overlayed an image of a home kitchen
    via Zaven Baghdasaryan for Unsplash

    A young teen girl in a dress, overlayed an image of a home kitchen

    Image is representative only and does not depict the actual subjects of the story.

  • "AITAH for uninviting my sister to my 17th birthday party after she stole my prom dress and destroyed it?"

    so i have a younger sister bella, who is 15. the best way to describe her would be as a brat, and a spoiled on at that.
    via Sporta_narres
  • she gets whatever, whenever, wherever she wants. good grades? new iphone. she fails a test? oh she's just stressed, let's get her ice cream to make her fell a wee bit better.
    via Sporta_narres
  • meanwhile i have to work a part time job at a cafe to buy my own things my senior prom is coming up.
    via Sporta_narres
  • ive been saving my tips for 3-4 months to buy this gorgeous silk vintage dress online.
    via Sporta_narres
  • it cost 250 bucks (and a whole lotta nerves). it arrived last week and it was literally perfect.
    via Sporta_narres
  • having admired it, i put it into my closet so that bella wouldnt get her chubby little fingers on it.
    via Sporta_narres
  • yesterday i came home from school and saw bella in the kitchen, wearing MY DRESS. she was making a stupid tiktok, the concept of which i actually never understood.
    via Sporta_narres
  • The interior of a home kitchen.
    via Collov Home Design for Unsplash

    The interior of a home kitchen.

  • like whats the benefit? ur basically being a clown in a digital circus. whatever. so, there she was, dressed in my prom dress, which i worked my ass off for, holding a milkshake in her hands or some purple juice.
    via Sporta_narres
  • wasnt my main focus at the moment. before i could even scream, she spun around, tripped, and spilled the entire glass of that purple juice all over the front of MY silk dress ITS RUINED.
    via Sporta_narres
  • COMPLETELY AND ABSOULETELY STAINED BC OF HER STUPID MANIA OF MAKING DUMBASS TIKTOKS i screamed. like actually screamed.
    via Sporta_narres

  • Though we'll never support profane language, the older teen has the right to be upset. Her sister, who clearly gets what she wants more than she's told “no,” has no remorse for what's just gone down. How can there be a chance for reconciliation and mediation if one party sees itself as completely absolved from any responsibility, even though it is the main perpetrator? 

    This response makes the older teen's choice crystal clear and justifiable. It's her birthday, and she doesn't need to have her special day dampened by her younger sister, who clearly has no regard for her feelings anyway. The children's mother is unable to reprimand the youngest for some reason, and because of this, a sibling rivalry is born. Parenting 101: Don't do that. This might happen to you if you're not careful!

  • i started crying immediately my mom ran in. she saw the dress and saw me crying.
    via Sporta_narres
  • instead of yelling at bella, she told ME to calm down. she said something in the lines of hey, calm down, stop crying.
    via Sporta_narres
  • bella just wanted to look pretty, we can dry it out and wash it off, it wasnt her fault, look she is sad too about what happened bella wasnt sad.
    via Sporta_narres
  • or maybe she was. a little bit. she was looking at her phone, tears swelling, while constantly tapping and swiping.
    via Sporta_narres
  • the only thing that little brat was sad about is the ruined tiktok ig i told them that bella is banned from my birthday dinner this weekend (we were arranging to go to a nice sushi place with family where we usually go to big events cuz of the insane atmosphere, its like a garden-themed neon-lighted japanese village) i said that i dont even wanna look at her, nor talk to her.
    via Sporta_narres
  • like, the brat owes me 250 bucks and a fucking therapy session. i was saving up for this dress for like 4 months.
    via Sporta_narres
  • my dad stepped in and said that i am actually being the brat and that i was very vindictive and that this type of behavior is not appreciated in this family (yeah but taking other peoples clothes w/o their consent and ruining them is, ig) and that i can't exclude my sister from family bc of some cloth.
    via Sporta_narres
  • they said if bella can't come, they aren't paying for the dinner at all i told them to cancel the dinner then bc it wasnt just fabric to me.
    via Sporta_narres
  • it was hours of hard work, sweat, burnt out nerves. the worst thing is that bella hasnt even considered apologizing.
    via Sporta_narres
  • she just gives me a disgusted smug look like im the one who ruined her dress over a stupid ass tiktok so, yeah.
    via Sporta_narres
  • it is what it is. at least ive got my dignity, right? aitah?
    via Sporta_narres

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drama birthday party family feud prom sister dress
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