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Neil Warner / TGB / Splash News / Splash News 1 / 2

The Spanx are out for Kim Kardashian West!

The 35-year-old reality star was wearing a white, one-shoulder Vivienne Westwood gown with a very high slit that exposed her body shapewear when she went to the the Teatro dell'Opera for the premiere of "La Traviata" with her husband Kanye West in Rome on May 22.

Kim has recently been outspoken about her love of Spanx.

"Sometimes I wear two pairs of body shapers on top of each other—especially when I am heavier I def double it up," she said on her subscribers-only website and app. "My favorite styles are the Body Wrap shorts and the Spanx footless tights."

In fact, she even admitted to wearing two Spanx at once!

"I put one pair on after the other, and if there's a longer pair, I always put those on first. But usually, I wear two pairs that are the same length," she said. "I try not to layer two different lengths, because I don't want there to be visible seams; I want there to always just be one seam."

But now it appears that Kim has done one of her fashion no-nos.

"One body shaping no-no, though, is when the Spanx show," Kim said.

She even thought that she found a solution.

"I just recently got introduced to the footless tights, which I can wear with longer dresses like this—so you'll NEVER see my Spanx line because the seam is lower," she wrote. "I typically like them past the knee or right at the knee."

So what happened here?

It looks like it was just an accident and that she didn't mean to flash the Spanx, because she's also seen holding the top of her slit and adjusting her dress in numerous photos.

And while the Spanx are part of her wardrobe, you could say that the mother of two doesn't even need a pair.

She's back to her pre-baby weight of 135.8 pounds after giving birth to son, Saint West, last December. Kim gained 70 pounds while pregnant, and she credits the Atkins diet for helping her to accomplish her pre-baby goal weight.

After all, Kim is all about her body!