It's pretty clear that Miley Cyrus will make Santa's naughty list this year, and here's another reason why.

The 21-year-old singer tweeted a Christmas card to her fans that features her wearing a photoshopped Santa hat and flashing her bare breasts, which were covered by a heart-shaped photoshopped Christmas greeting.

However, according to the "Wrecking Ball" singer, she decided to expose her breast in support of the independent film "Free The Nipple," which compares the censorship of female nudity and the oversaturation of violent imagery in U.S. media. The film also shows topless women getting arrested in New York for being "obscene" even though it is perfectly legal for them to show their breasts.

"Merry Christmas ❤️❤️ THANK YOU NY for being one of the few states to @freethenipple," the singer wrote on Twitter with the photo on Saturday.

To prove that she wasn't just flashing her breast for the hell of it, the actress later tweeted, "It's not about getting your titties out. It's about equality."

On Sunday, she followed up with another message regarding the photo, tweeting "my topless pic is showing less than when I wear clothes haha. People are proving my point so easily."

Other reasons the former Disney star is likely to top Santa's naughty list include her recent concert performance when she twerked on a guy dressed like Santa and her 21st birthday bash last month, which she celebrated with booze, celebrities and strippers.

According to Us Weekly, the singer threw a wild birthday bash on Sunday, Nov. 24 at Beacher's Madhouse in West Hollywood following the American Music Awards where she performed her hit song "Wrecking Ball." During her emotional and bizarre performance, she wore a high-cut two piece covered in a cat print with Alexis Bittar jewelry while a giant image of a singing and crying cat moved on the screen behind her.