What went wrong?
"While we have decided to end our marriage, we both share the same deep love and devotion to our children," the duo said in a joint statement.
"We remain dedicated to raising our beautiful daughters together. We ask for privacy and respect during this time."
Aside from confirming the sad separation, reps for the couple aren't commenting on details surrounding their break-up, though rumors of trouble in paradise have plagued the couple since last year, with the most fervent speculation of an impending split coming last July, with reports claiming the couple had even taken to living separately.
In the meantime, though it's unclear when exactly the couple officially parted ways, Garth has already unfollowed Facinelli on Twitter.
The Twilight star and erstwhile 90210 actress tied the knot in 2001. It was the second trip down the aisle for Garth, who was previously married to Daniel Clark before divorcing in 1996.
The now estranged couple has three daughters together, Luca Bella, 14, Lola Ray, 9, and Fiona Eve, 5. Though Facinelli, at least, is already back to (show) business as usual, having accompanied his daughter Luca out to last night's premiere of The Hunger Games.
(Originally published on March 13, 2012 at 9:54 a.m. PT)