Madonna is a big fan of Taylor Swift.
The 'Hung Up' hitmaker admires the 'Shake It Off' singer's "pretty dresses" and "catchy pop songs", which she admitted often get stuck in her head.
She told Australia's 'Today' show: "It's good to have princesses [of pop]. It means there's lots of pretty dresses around.
"I like Taylor Swift. I think she writes some really catchy pop songs. I can't get them out of my head."
And Taylor, 25, was thrilled by the pop superstar's compliment.
She wrote on her Tumblr page: "Thanks now I'm dead."
The 56-year-old singer recently had her forthcoming album 'Rebel Heart' leaked online and says the move was the "ultimate violation".
She added: "To have your work taken before you're finished and put out into the world for people to hear and judge and experience... I can't begin to tell you how betrayed I felt."
Earlier this month, a 39-year-old Israeli has now been arrested in Tel Aviv by the Lahav 433 crime-fighting agency for "breaking into" her computer and the 'Vogue' hitmaker subsequently expressed her relief at the news.
She wrote on Facebook: "I am profoundly grateful to the FBI, the Israeli Police investigators and anyone else who helped lead to the arrest of this hacker. I deeply appreciate my fans who have provided us with pertinent information and continue to do so regarding leaks of my music. Like any citizen, I have the right to privacy.
"This invasion into my life -- creatively, professionally, and personally remains a deeply devastating and hurtful experience, as it must be for all artists who are victims of this type of crime."