Choosing the people for your bridal party is a big decision. These will be the most important people at the wedding, besides you and the person you're marrying. They symbolize a significant part of your life and can also offend people for not being chosen. On a popular Reddit thread on the Am I the A**hole Subreddit, one woman is not pleased with her sister's bridal party decisions.
My sister and I aren't best friends, but we have a good relationship. Good enough that I assumed I would either be MOH or a bridesmaid when she got engaged. She did not ask me despite having a bridal party of 10, but I didn't say anything even though I was a little hurt.
I get that it was her wedding, and I was not entitled to be in her wedding party, and I eventually got over it.