Kelsey Grammer and Kayte Walsh will be "amazing parents".
The 'Boss' star and his former flight attendant wife recently announced they were expecting twins together and Kelsey's co-star Kathleen Robertson knows the babies will be blessed with a great mother and father.
She told People: "They're lovely and wonderful and madly in love, and they're going to be amazing parents. It's great news."
Kayte, 32, says she and Kelsey, 56, aren't fully prepared for the twins' arrival but insists they're not worried about it.
She said: "We're just taking each day as it comes."
Kelsey - who already has four children, Spencer, 28, and Greer, 19, from previous relationships and 10-year-old Mason and Jude, seven, with ex-wife Camille Donatacci - added: "We're waiting until it all hits. We know where to find diapers and stuff. It's easy to find cribs."
The former 'Frasier' star recently paid tribute to his wife, saying: "She's one of the most loving, amazing, warm human beings I've ever met."
The news comes after Kayte tragically had a miscarriage in October 2010, four months before their wedding.