Demi Moore has returned to twitter after a three-month break.

The 49-year-old actress - who separated from husband Ashton Kutcher after six years of marriage in November 2011 - continues to tweet under her married name @mrskutcher and posted a picture of herself lying on a bed with the caption "Testing...."

Demi had previously been a prolific user of twitter, but this is the first time since January 7 she has used the social networking site, when she tweeted Harper's Bazaar magazine for "supporting" her.

Last month, the 'Indecent Proposal' actress left Utah's Cirque Lodge clinic - where she was receiving treatment for "an eating disorder and addiction issues" - and is said to now be in a "much better place".

A source said at the time: "Demi is in a much better place. She has been working on herself a lot. She is content.

"Demi feels great and she is eager to get back to work. She has been focusing on her health in the last month and she's getting better every day. Demi wants to work again; she knows that she can handle a few projects so she's looking forward to that.

"She is totally committed to getting better. Demi has a long way to go, but she is getting better. She has many days where she feels great."