"Jasmine and Crissy are doing extremely well!" Barker told Us.
Barker announced in June that his wife was pregnant with their second child. Despite the fact that they initially thought they were having a boy, they subsequently learned in September that the new addition to their family would be a girl.
The 36-year-old photographer and his 33-year-old wife -- who wed in 2001 -- already have a son Jack, who recently turned 3.