Beyonce -- Take A Look At My Doppelhangers!

Sorry, Internet ... that's not Beyonce topless at the beach -- no matter how much you want it to be.

Photos started circulating Tuesday morning ... showing a woman who looks a lot like Bey flaunting yellow bikini bottoms, and nothing else. Just fully exposed whoppers.

However ... we've got an eye for this stuff, and dug into the archives to discover the woman in the pics is actually ex-Big Brother U.K. contestant Rachael White -- and the photos were shot back in 2011.

Beautiful Liar.