Pop star and lingerie model Melanie Brown has turned down a $1.85 million offer to pose nude for Playboy – because she limits her naked antics to the bedroom.

The former Spice Girl, who strips down to her lacy underwear as the spokesmodel for Ultimo, insists she would never shed all her clothes for the men’s magazine.

She tells Access Hollywood, “No, I’m not going to do it.”

But that doesn’t mean Brown isn’t an exhibitionist – she just prefers to show off her naked body to her husband Stephen Belafonte in the privacy of their own home: “There is (an exhibitionist side to me) – in my bedroom, late at night for hours on end!”