Miley Cyrus Miley Cyrus

Miley Cyrus may have gotten an early holiday gift — or gifts.

The 19-year-old singer hit the CNN Heroes: An All-Star Tribute event Sunday flashing some major cleavage. Star magazine tracked down a handful of experts who say that based on the volume, it looks like she got breast implants.

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But Cyrus was quick to shoot down these rumors. "Thank you for the compliment but these babies are all mine," the singer tweeted Tuesday. "I wish they'd realize you don't have to be fake to be beautiful!"

What do you think? Are they real?