Kevin Federline’s new girlfriend is pregnant with his 5 child..and his first “baby mama” Shar Jackson could care less…

Here’s what she has to say about K-Fed’s latest addition:

“It’s just not part of my life,” she told PEOPLE on Tuesday at the launch of Silver Jeans Co. at M. Fredric in Studio City, Calif. “I’ve got my own family to worry about, I can’t really be worried about what’s going on with anybody else. Good for them, and of course I wish them well.”

“People have been asking me what I think, or if I have a comment,” she says with a laugh. “And I’m like, ‘Yeah, I have a comment. I need to go home and cook for my own kids!’ “

There’s your comment America.