My sister-in-law wore a white gown to my wedding – that wasn’t even the worst thing she did

A BRIDE says her sister-in-law wore a white gown to her wedding and that wasn’t even the worst thing she did.

A friend of the bride shared the horror story on Reddit, revealing that the woman’s husband’s sister committed the ultimate wedding sin by wearing the dress.

Before the wedding, the bride said her husband had shot down his sister’s first pick for the dress she wanted to wear on the special day.

According to the friend, the sister became infuriated and warned that she will “never speak to her brother again” if he went through with the wedding. 

After the threat, the groom is said to have uninvited his sister from his nuptials. 

So, not only did she show up while uninvited, she wore a floor-length white gown that could be mistaken as a wedding dress. 

Many Reddit users who saw the photo actually did mistake the sparkling gown for a wedding dress.

“I thought the bride was the one in the middle, and that she was upset because the sister wore black. Then I finished reading…” one user wrote, with many sharing their similar reaction.

However, the family friend said the situation got worse, as the drama is being spilled all over Facebook. 

“Plot twist, the sister had separately posted a TikTok where she was claiming the bride was toxic and jealous, admitted to wedding crashing, mentioned how she had the last dance with the groom, and said she gives the marriage five years top,” the person wrote in the comment section of their post.

“The bride is understandably very upset about what happened and posted something a few days ago about how she was disappointed that someone would act this way but didn’t add any identifying info or name drop,” the person further explained. 

Reddit users were even more shocked after learning of this new information. 

“So the sister wanted to marry her brother," someone wrote.

"There is no other explanation for the obsessively jealous behavior. She seems like a jilted ex.

“This is jealous ex-girlfriend behavior. 

“Absolutely wild that his sister would act like this,” another person added.

There has been no update about how the groom handled the situation.