Jessica Simpson first guest on Katie Couric's new show

Singer/actress Jessica Simpson will be the first guest on Katie Courics new talk show Katie when it premieres Sept. 10.

This will mark Simpsons first appearance since she gave birth in May.

Since becoming a mother, Simpson has been offered the chance to be a spokeswoman for Weight Watchers if she can lose the weight she put on during her pregnancy.

Simpson will discuss with Couric the difficulties in losing that weight.

Singer Sheryl Crow will also appear on Katie premiere episode. Crow wrote and performs the shows theme song.

She is set to discuss her recently diagnosed brain tumor.

I worried about my memory so much that I went and got an MRI. And I found out I have a brain tumor,Crow said in June.

Fortunately, the tumor is reported to be benign.

On the second episode of Katie, Couric will talk to Aimee Copeland, who made headlines earlier this summer for partially losing her limbs to a rare flesh-eating bacteria.