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"Both, needless to say, are thrilled," rep Elliot Mintz tells the Associated Press.
Johnson and the former Kelly Phleger married in 1999 and have a daughter, Grace, who will be 6 years old on Wednesday, and a 3-year-old son, Jasper.
Johnson, 56, has two other children: a 23-year-old son, Jesse, with Patti D'Arbanville-Quinn, and a 16-year-old daughter, Dakota, with former wife Melanie Griffith.
His most recent TV series is Just Legal.
