James Van Der Beek and wife Kimberly are expanding their family -- the "Dawson's Creek" star revealed today ... they're having another baby!
James took to Twitter to announce the happy news -- saying, "Just when we thought we couldn't feel any more blessed, it seems the universe has plans to give our daughter a sibling!"
The coupled welcomed daughter, Olivia, in September, 2010. No word on when the new baby will arrive.
Congrats!
