David Arquette -- I've Been Sober for 100 Days!!!!
It's been 100 days since David Arquette took his last sip of the Devil's juice ... and this morning, the actor went on Twitter to brag about it!
Arquette -- who checked himself into rehab for “alcohol and other issues” back in January -- tweeted, "I have 100 days of Sobriety today!!! Life is beautiful.:D”
Mazel Tov!