Heather Mills, Paul McCartney's estranged wife, has plans for a new career path - as a sex guru.

According to secret sources, the 39-year-old former model wants to write a book of sex tips for girls, because she believes there is a "gap in the market".

"Heather believes there's a gap in the market for a good sex guide for women," a source told the Sunday Mirror.

"She said that sex manuals are normally written from a man's perspective and that she could do a good one for females. I think she'd like to set herself up as a sex guru."

"She wants to give her little secrets away on how to attract a man and how to keep him happy in the bedroom. Despite the breakdown of her marriage to Paul, neither side has ever said anything bad about their sex life."

However, the source added that Heather was "worried what people will think of her" so had considered publishing the sex manual under a false name.

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