There was twerking as well as spanking at Miley Cyrus' "MTV Unplugged" performance, which featured a duet with Madonna.
The 21-year-old pop princess and the Queen of Pop had shared photos of themselves together late on Tuesday, the day of the concert. The special is set to air on MTV on Wednesday, Jan. 29, at 9 p.m. ET.
The two wore bedazzled cowgirl uniforms and performed a mashup of Madonna's 2000 single "Don't Tell Me" and Miley's 2013 song "We Can't Stop" for a closing duet and hoedown dance.
They grinded on one another during the performance at the concert, which had a country theme, according to the Associated Press. Cyrus is a native of Nashville and her father is country star Billy Ray Cyrus, who starred with her on the Disney Channel series "Hannah Montana," the show that made her famous as a child.
"Cyrus spanks the 55-year-old Queen of Pop during the duet, which made Madonna's Britney Spears kiss feel like it was way more than 10 years ago," wrote AP writer Sandy Cohen, referring to Madonna's then-controversial onstage smooch with Spears -- and Christina Aguilera -- during the 2003 MTV Video Music Awards.
Miley and Madonna had on Tuesday shared photos of the two in their cowgirl costumes, sticking out their tongues -- a pose Cyrus has become known for in recent months as she continues to showcase a new, more mature persona. She twerked with her tongue out at the "MTV Unplugged" gig.
The former child star first raised eyebrows last year with a sexually-explicit music video for "We Can't Stop" and famously twerked with Robin Thicke at the 2013 MTV Video Music Awards.
"I grew up listening to Madonna and a lot of what she represented for me is what I try to represent to girls now is not being afraid of sexuality and really being who you want to be and doing what you want to do," Miley told MTV. "'Don't Tell Me' is basically the same message of what I'm telling me fans in 'We Can't Stop.' I feel like 'We Can't Stop' is kind of the 2013 version of 'Don't Tell Me.'"