The 'Wrecking Ball' hitmaker and the Victoria's Secret Angel are said to have been dating ''for months'' and are known to friends as ''a couple''.
A source told the New York Daily News newspaper's Confidenti@l column:
''They hold hands and hug and are very comfortable together. They're definitely together.''
Miley and Stella have been seen spending a lot of time together since the 22-year-old singer split from Patrick Schwarzenegger in March, including trips to LAs Vegas and the South by Southwest festival in Texas, and can regularly be spotted in pictures on one another's Instagram feeds.