Published Saturday, 15 March 2014
The Wrecking Ball hitmaker can be seen in a photograph, posted by a male friend on his Instagram page, putting a suspicious-looking substance into cigarette paper while in a recording studio in Tulsa, Oklahoma.
The pal wrote in the caption: "Yup...... Recordin (sic) with Miley... High as f***..."
Cyrus hit headlines last year by sparking up a joint on stage at the MTV Europe Music Awards in Amsterdam, Holland, where marijuana is legal.
While in Tulsa, the singer also added a lip tattoo to her collection of body art.
She showed off her latest inking in a picture posted on her Instagram page on Friday. The image shows the pop star pulling down her lip to reveal a yellow and black cat, which she dubbed "sad kitty".
Her friend - who accompanied her to the tattoo parlour - also wrote on her own page: "We got tattoos on our lips... What the f***."