United Kingdom, May 25 -- Miley Cyrus likes to be "reliably unpredictable".

The 33-year-old pop star admits that she's not "super into astrology" - but Miley has described herself as a "logical wild card".

Speaking to Variety, the chart-topping singer - who will celebrate her next birthday in November - explained: "I'm a Sagittarius. My sisters are Capricorns. I love Scorpios, Sagittariuses and Capricorns, that whole trifecta.

"I'm not super into astrology, but I know, by the book, what that means. I'm kind of a logical wild card, if that makes sense.

"I like to do something bold but also do my own math about it. I want to know what I want before I make a choice. But anything I say could be out the window tomorrow.

"I like to be reli...