Actress Demi Moore tweets a picture of herself semi-naked in the shower

• Demi tweets semi-naked pic of her back
• Believed to support Kutcher's new ad campaign

Ashton Kutcher (centre) in the Two and A Half Men "All Will Be Revealed" ad campaign. Picture: Supplied

"To remember to be your own best friend to find light & protection from within yourself" ... Demi Moore's explanation for her latest Twitter picture.
DEMI Moore has put her body on the line - literally - to support husband Ashton's Kutcher's new Two And A Half Men ad campaign.
The 48-year-old actress posted a semi-nude photo of herself on Twitter with the caption, "remember ... you've got your own back."
Moore's semi-naked picture coincides with Kutcher's new "All Will Be Revealed" campaign for premiere of the sitcom on September 19.
In the self-taken pic, Moore poses in the bathroom wearing only thick, black-framed glasses. Her bare back is visible from the waist up insinuating that she is completely naked.
The only explanation the star offered for posting the cryptic message was to "remember to be your own best friend to find light & protection from within yourself."
It's not the first time Moore has dared to post such a revealing image on the social networking site.
12 months ago the mother-of-three posted a shot of herself in sunglasses and a skimpy bikini, again in her bathroom.
Kutcher, who is replacing sacked star Charlie Sheen on the sitcom, recently appeared on the season premiere of TV chat show Ellen also seemingly naked.
"We're going to start pretty soon, so maybe you want to change?' the 50-year-old talk show host DeGeneres asked Kutcher after spotting his nudity backstage.
His response: "Oh no, I'm ready. This is it. (The Two and a Half Men ad) is getting a lot of attention, so I just figured I'm going to do everything nude from now on."
The body-confident couple celebrate their sixth wedding anniversary on September 24.
Moore will next star in thriller Margin Call which also stars Zachary Quinto, Jeremy Irons and Kevin Spacey.