Corteney as you've never seen her before

She is known to fans of Friends as the good girl, obsessed with neatness and perfection. But now it seems Courteney Cox is finding perfection with something dirty in her new TV role.

The 42-year-old, who plays a magazine editor in US show Dirt, took saucy sex scenes one step further and pleasured herself for an episode screened this week.

In steamy clips that are a far cry from her Monica Geller days, she grabs a vibrator out of her bedside table drawer and slips it under the covers - not once, but twice.

Just don't tell Ross what his sister's been up to...