Pop star-turned-fashion guru Jessica Simpson is designing a maternity wear clothing line.
 
The pregnant singer and her sister Ashlee launched their new pre-teen girls fashion line in New York on Thursday, and she is already planning her next project - for stylish moms, like her and her sibling.
 
She says, "We want to do baby, kids. I'm gonna do maternity."
 
She won't be the only new celebrity mom planning fashions for pregnant women in 2012 - Beyonce recently revealed she's creating a maternity line too.

Slideshow: Sexy Jessica Simpson Photos