(Cover) - EN Showbiz - Courteney Cox is trying to convince Demi Moore to appear in TV show Cougar Town.

The actress, who stars in and produces the American comedy series, is convinced that getting the gorgeous Hollywood star on board will boost viewing figures for the third season.

Although 48-year-old Demi who is married to Ashton Kutcher, 33 - has so far declined the offer, Courteney hasn't given up hope yet.

"Demi's turned her down so far, but Courteney's not giving up. She knows Demi would boost ratings big time," a source told The National Enquirer.

The former Friends star has also upped her exercise regime in a bid to look her very best for the new season.

Courteney will be required to shed her clothes in several scenes, so the 47-year-old star has been hitting the gym with gusto.

The brunette beauty also wants her younger co-star Busy Philipps looking good too

"Courteney wants better ratings and she knows sex sells. The upcoming episodes will be much steamier and show a lot more skin. She's upping her time on the treadmill and trying to get in even better shape and she's encouraging Busy to do the same," the source added. (C) Cover Media