Miley Cyrus hasn't stopped shocking fans on her Bangerz tour just yet.

During her tour stop in San Juan, Puerto Rico, the "Wrecking Ball" singer and her dancers twerked on stage with prosthetic rumps on their backs. While performing the hit "23" Miley dropped it low and also twerked with a few male dancers while they slapped the fake butt.

The singer's need to push the envelope has been pleasant for some of her fans, but a problem for a few countries. In August, Miley was banned from performing in the Dominican Republic because of her raunchy stage antics.

The singer will begin her South American leg of the tour later this month before closing the show in Australia in October.

Check out Miley and her fake cakes in the video above.

Source: YouTube | Photo Credit: Splash News