United Kingdom, April 18 -- Jennifer Aniston was "completely naked" in a sauna when fans decided to approach her.

The 56-year-old actress- who shot to fame alongside Courteney Cox, David Schwimmer, Lisa Kudrow, Matt LeBlanc and the late Matthew Perry when she took on the role of Rachel Green in the hit 1990s sitcom 'Friends' - was asked about the most "surprising" place she had been recognised as her alter-ego and admitted it was when she was in quite a "vulnerable" state.

She told Travel+Leisure magazine: "Not surprising, but I've been in vulnerable places, like undressed in a steam room, or in a sauna or some sort of a spa either half-covered or completely naked."

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