We all know Miley Cyrus can't be stopped. But the vivacious singer may have just taken an alleged Nicki Minaj impression a little too far.

During a performance in Puerto Rico for her "Bangerz" tour, the star appeared on stage wearing a rather large prosthetic derrière. But was Miley purposely dissing hip-hop queen Minaj?

In a video of the performance, Miley and several back-up dancers wear giant fake behinds attached to their barely-there one-piece costumes. The "Wrecking Ball" star then proceeds to twerk rather closely to several male dancers.

The sight would almost be shocking if it weren't a Miley Cyrus concert.

Speculation that Cyrus may have been trying to diss Minaj spread quickly, especially since Miley recently posted a photo of herself wearing an extra large imitation bottom on Instagram.

"Ass so fat need a lap dance," Cyrus captioned the pic.

Many believe that Cyrus was referring to Nicki Minaj's music video for her single "Anaconda," in which she shows off her butt and gives rapper Drake a lap dance.

Cyrus also appeared to poke fun at Minaj when she uploaded a photo of the cover art for "Anaconda" featuring the face of Miley's former television alter-ego Hannah Montana. Being the cheeky Miley that she is (pun intended), the pop star titled the picture "Hannah Conda."

"Give me one good reason why Miley made this her twitter avi. #AnacondaOniTunes," Minaj later wrote on Twitter in response.

Could a feud be brewing between the chart-topping divas? Or is Cyrus just flaunting how much of a fan she is of Minaj?

Something tells us we'll be hearing more about this story.