This wedding horror story is so unbelievable, I talked to a few guests who witnessed it just to make sure it was legit! Sadly for the bride, it's shockingly real.

Young woman yelling, side view, close-up Getty Images

"My groom's mother is very theatrical. She over-dramatizes everything and will try to steal the spotlight (usually by singing in her so-so voice) whenever she can. She insisted on making a wedding toast, so we said she could do so at our rehearsal dinner (definitely not the wedding). Just to be careful, my groom and I asked her not to sing during the speech. It seemed ridiculous that we even had to make this request, but she's definitely the type that needs ground rules.

About five minutes into her already over-the-top speech, she apologized to my groom and me…and then said she just had to sing! We were so dumbstruck that we didn't try to stop her.

As if her announcement weren't bad enough, get a load of her cringe-inducing song choice: "Wind Beneath My Wings." My groom and I tried to look at her appreciatively, but really, we just couldn't bear to look at our many out-of-town friends at the rehearsal dinner who were humiliated for us.

I suppose I should be thankful that my mother-in-law behaved herself at the wedding! I'm especially grateful that our friends haven't brought up her performance since the rehearsal dinner."

What would you have done if you were this bride? Have you ever witnessed a drama-seeking relative put on an impromptu show at a wedding event? Are you worried someone at your wedding or rehearsal dinner might do something similar?

Christmas may be over, but you can still add some merry to your life. Follow me on Twitter!

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Photo: Marili Forastieri