Mert Alas and Marcus Piggott / Vogue 1 / 15
Mert Alas and Marcus Piggott / Vogue 1 / 15

NEW YORK (AP) -- Lady Gaga is one of the most visible celebrities in the world, but she says not everything she does is documented.

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In the September issue of Vogue magazine, Gaga says she likes to "feel a little irresponsible and act like I'm nineteen." She goes on to admit she even manages to "roll into a bar" and dance topless or have sex on the beach without getting recognized.

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The 26-year-old singer credits her friends for helping her not get caught by paparazzi.

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The September issue of Vogue is its 120th anniversary issue and the magazine's largest yet. It goes on sale Aug. 21.