Summer may not officially start until June 21, but summer weather is already here.

And it's not just hot outside; it's humid. Here at HuffPost Celebrity's New York City headquarters, we're practically melting, but at least we're not alone. There are plenty of stars who couldn't beat the heat and sweat it out instead.

If you want more proof that celebrities are just like us, look no further than their sweat-stained clothing. With hot lights, big crowds and the sun beating down on them, it's no wonder we see more than a few pit stains making appearances on the red carpet.

From the smallest perspiration marks to sweat drenched celebs, check out these sweaty stars:

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