Either something is going on, or this is simply Mariah Carey being Mariah Carey. There's a new report that says the diva recently threw a major party at a villa in Italy and had all of her guests dress up like her.

According to Page Six on Tuesday, the "self-indulgent" costume party took place at a friend's luxury condo in the often star-studded Lake Como in Italy. Apparently, 40 of her closest pals dressed up like the chart topper, except for Mariah herself.

"Even the men dressed like Mariah," an insider told Page Six. "But Mariah went as her alter-ego, Bianca, and sported a jet-black wig."

Hollywood couple George and Amal Clooney, who live only ten minutes away from the villa, were not invited to the party, according to insiders.

What's more, 'Bianca,' who Mariah first introduced in her "Heartbreaker" video almost two decades ago, might be making a comeback as she teased her fans with two photos of her alter-go on her Instagram account this past week. And while no one really doesn't know what's going on, many of her fans don't think bringing Bianca back is a good idea. A lot of comments from her followers included, "Mariah you don't need to do this. You've got enough talent and beauty to keep your career going," along with, "She's getting too old for this. Leave the silly stuff and costumes to people like Beyonce and Jennifer Lopez."

So far, Mariah herself hasn't responded to the criticism nor has she revealed that she is going to do with Bianca next. The singer is currently in the middle of her "Sweet Sweet Fantasy Tour" in Europe. She has been using the Italian villa - which rents for $12,250 a night - as part of her home base during the European leg of her tour.

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Tags: Mariah Carey