Fergie wears her sexy stage outfits in the bedroom.
When asked about her sex life since she married Josh in January, Fergie said: "Nothing's changed in that department. I like to have fun in my costumes on stage - why wouldn't I in the bedroom?"
Fergie also confessed she has an impressive collection of outfits which she only dons for her 36-year-old husband for steamy role-play sessions.
The 36-year-old star explained to Allure magazine: "Oh, girl, I've got a big chest of fun little numbers, ones that I would never wear in public!"
Meanwhile, Fergie has revealed she was delighted when she and Penelope Cruz were both ordered to gain 17lbs for new musical movie 'Nine'.
The shapely singer enjoyed indulging her cravings for junk food, but admits it was a struggle to shed the weight after shooting had wrapped.
Fergie said: "We were eating our brains out. We ordered everything fried, full of fat and salty.
"It was a very gradual thing, getting back into it and finally letting a trainer train me. I didn't want to be told what to do, and I wasn't mentally ready to crack the whip."