She's just being Miley!

Miley Cyrus, 22, shared a naughty Instagram of her Cinderella Halloween costume this past weekend, but at least one person in the star's inner circle was not amused.

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Selena Gomez, 23, allegedly thought the "Wrecking Ball" singer's outfit was disrespectful to Disney — the channel that made both of them famous.

“Selena thinks Miley Cyrus’ recent posts of her wearing a Cinderella outfit while smoking a blunt are in very poor taste,” a source tells Hollywood Life.

Miley has always been open about her love of weed, but Selena's reportedly had enough.

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“She can believe that Miley would do something like that because of her track record and the way she has tried to disguise her past, but Selena thinks it’s completely disrespectful to Disney," the source continues. "After all, it was them who gave Miley her first big break, and Selena would never do something so rude."

You know what they say, don't bite the hand that fed you!