(Cover) - EN Showbiz - David Arquette has proudly announced he has been sober for 100 days.

The actor and his wife Courteney Cox Arquette announced their separation last October after 11 years of marriage and the star suffered a number of personal problems following the split. They culminated when he entered rehab on New Years Day after months of partying and erratic behaviour.

He successfully completed his stint in treatment and now feels better than ever. Yesterday was a landmark day for David, so he decided to talk about it on social networking website Twitter.

"I have 100 days of Sobriety today!!! Life is beautiful. :D (sic)," the actor shared with his followers.

Earlier this week, David posted a picture of himself, Courteney and their daughter Coco at Disney World in Orlando, Florida, on his profile, prompting speculation the couple may be reuniting.

The 39-year-old and his estranged wife have stayed amicable since their split and Courteney recently admitted she still has strong feelings for David. (C) Cover Media