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All eyes were on Miley Cyrus' cleavage at the CNN "Heroes" tribute on Sunday -- and now the former Disney star is fighting back against rumors she had her bust surgically enhanced!

Star Magazine had a few random plastic surgeons sound off on Cyrus' chest after her red carpet appearance Sunday night -- and while they said it looks like she went under the knife, Miley says otherwise.

"Thank you for the compliment but these babies are all mine," the 19-year-old tweeted this afternoon. "I wish they'd realize you don't have to be fake to be beautiful!"

This is only the latest in a string of controversies for the young star. Check out her most controversial moments ... so far ... below:


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