Miley Cyrus and Chappell Roan Matei Horvath/GA/The Hollywood Reporter/Getty Images; Aurore Marechal/Getty Images Share on Facebook Share on X Google Preferred Share to Flipboard Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Send an Email Print the Article Post a Comment Hannah Montana is turning 20, and Miley Cyrus is celebrating with an hour-long special - with the help of some of her fellow pop stars.