Kim Kardashian had photogs once again shooting her famous curves this weekend in Las Vegas -- but for all the wrong reasons!

The reality TV star stepped out to a "True Reflection" perfume event at Kardashian Khaos at The Mirage yesterday, where she revealed a little too much in a sheer black dress.

No, it wasn't any of her anatomy that peeked through ... but a tag!

While it's not the most embarrassing of mistakes, it still seems like something someone in her team should have caught before stepping onto the red carpet -- especially since she always poses backside first.

Check out more shots of Kim from the event above!

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