AceShowbiz -

Jaime Pressly makes it official during a taping of "The Tonight Show with Jay Leno" on Wednesday November 15th that she's pregnant.

The actress, who is four months pregnant, told Leno she's expecting a boy. She knew the fact when her doctor showed her an ultrasound.

"She asked me what I thought I was having and I said a boy," Pressly said. "She looked at the picture and said, 'If that's not a boy that's a third leg.' Of course, Eric says its because he's Cuban."

On top of all, Pressly and her deejay fiance, Eric Cubiche have picked a name for the soon to-be-born baby. It is Dezi James.

So, when will Pressly and Cubiche tie the knot? They aren't in a rush somehow as the beauty told Leno, "It takes a lot of work and planning."