Brooke who gave birth to twins Bob and Max on March 14 has revealed they each prefer one of their sons, but expects that to change in the future.
In the couple's first join interview since they became parents, Brooke said: "We have favourites already!"
Charlie quickly interjected: "No, no. The kids will see this interview one day and never forgive us."
Brooke added to US TV show 'Extra': "But they're fake favourites. They're not real favourites."
Asked which of her newborns she liked the most, Brooke replied: "Max is my favourite. Max is sweet and quiet. Bob is kind of loud and cries a lot like his father."
Max and Bob were born six weeks early, and Charlie has thanked his fans for their messages of support.
He said: "I also want to say to all my fans. Thank you for the outpouring of love and support and well wishes. We really appreciate it. It's an exciting time for us. Be careful what you wish for. Here we are... with twins!"
Charlie - who also has daughters Sam, five, and Lola, three, with ex-wife Denise Richards and 24-year-old daughter Cassandra from another marriage -recently admitted he is finding caring for the twins difficult because he can't tell them apart.
He said: "I can't tell who's who! They're not identical, but at this stage, they're similar enough."