Bride-To-Be Changed Theme Of Engagement Party After Learning Her Half-Sister Was Planning On Wearing A Wedding Dress

In OP's story, her sister (whom she names Heather) has been trying to one-up her their entire lives. Their family situation is weird; their dad left OP's mom for Heather's mom, and the two were actually born within a few weeks of each other.

When OP got engaged, she invited Heather to the engagement party. But one of her cousins told her that Heather was planning on wearing a fancy wedding dress to the party. So, OP changed the theme to a costume party. She told her dad to tell Heather and Heather's mom, knowing he'd forget.

When the day came, everyone was in costume. Heather showed up and was outraged that her outfit didn't steal attention, and she left while crying. The dad thought it was wrong of OP to do that, but OP didn't care.

Some people have siblings who love stealing the spotlight. But it seems that Heather goes above and beyond to be as absolutely horrible to her half-sister as possible. It's kind of sad how a grown woman would think that behaving like that is acceptable.

It seems that the dad is a big reason why Heather feels she can behave the way she does. It's pretty clear that he plays favorites. But the fact that OP used her dad's forgetfulness to enact the perfect revenge was pretty brilliant.

Some users even offered suggestions as to what OP could do if Heather tried to pull that stunt at her wedding. I think a renaissance-themed wedding would be incredible.