By SARAH BULL
She has hit headlines over the pas few months with her increasingly erratic behaviour.
So the latest pictures of Demi Moore are likely to cause concern among her family and friends, as the actress was seen exhibiting some very bizarre behaviour at a party with Lenny Kravitz on Wednesday night.
The 50-year-old actress played up to the photographers present at the Chanel Beachside Barbecue, leaving friends including Kravitz and George Clooney's girlfriend Stacy Keibler bemused by her antics.
As she enjoyed a chilled out sit down with Kravitz, Demi couldn't resist busting some moves in time with the music.
The mother-of-three, who wore a chic grey playsuit for the occasion, was seen lifting her arms and bumping and grinding while in her seat, as Kravitz appeared embarrassed and looked away.
While it is not clear whether or not Demi was drinking at the evening, an array of energy drink cans were seen in front of her on the table - perhaps giving some explanation to her behaviour.
As well as her dancing, Demi was seen playing around with her hair - pulling her raven locks in front of her face as she posed up with Lenny.
Later in the evening, Demi found a new friend to play with as she posed with Stacy, who did her best to give the waiting photographers a chic shot - despite a slightly manic-looking Demi clinging on her arm.
While Demi's new beau American art dealer Vito Schnabel was at the event, the pair didn't pose up together, but were rumoured to have indulged in a passionate PDA inside.