The Toxic singer reveals she is a big fan of her fellow Las Vegas residency star, and although Spears has yet to check out the R&B diva's Mariah Carey #1 to Infinity show at Caesars Palace, she has been enjoying listening to the Heartbreaker icon's latest work, which serves as the soundtrack to her private art sessions.

Spears tells Australian radio show Dan & Maz, "I love Mariah Carey. I was painting in my room. I have an art room and I just paint on the walls and do all this kind of crazy stuff.

"I bought her new greatest hits (album), and her new Infinity record yesterday and I was just in there with my top off, just like painting and doing all this artsy fartsy stuff. In my art room, that's my place. It's the best."

Carey responded to the pop star's comments by reposting a link to the interview news on Twitter.com and reaching out to the singer by writing, "hahaha! @britneyspears's the best!"

Spears has been headlining her own show, Britney: Piece of Me, at the Planet Hollywood Casino & Resort since late 2013.

Carey became the latest big star to take on a residency in Sin City last month (May15) when she launched her greatest hits gigs.