Lady Gaga has revealed she still behaves like a teenager sometimes.

The Bad Romance singer told US Vogue she likes to "feel a little irresponsible and act like I'm nineteen".

The 26-year-old, who appears on the cover of the mag's 120th anniversary issue in a dramatic pink gown, also confessed she even manages to "roll into a bar" and dance topless or have sex on the beach without getting recognised.

Gaga said she credits her friends for helping her not get caught by the paparazzi.

Meanwhile, Eminem has revealed he's recorded a song with the eccentric star.

He told MTV: "I've got this crazy record with Gaga and Kendrick for the upcoming LP. It's called Street Lights and it's just a real upbeat record."