Cowell is expecting his first child with New York-based socialite Lauren Silverman.
When Rowland was asked her take on what sort of a father will Cowell make, she said: "I think Simon is going to be a pretty cool dad."
Rowland and Cowell will soon be seen judging the third season of the American singing reality show "The X Factor" along with singers Demi Lovato and Paulina Rubio.
She feels that since he has guided so many people into their careers, and he has been like a father figure to several groups that he has put together, "it (fatherhood) is going to actually be a breeze for him".
"I think that it's so crazy. I think that above anything, life happens and this is a part of life, and a new life will be here, and it just so happens, it's going to be Simon's," she added.
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