Mother (to-be) knows best! A preggers Nicole Richie designs exclusive line for A Pea in the Pod. Photo: Jason Merritt, Getty Images

Yesterday, Twitter was abuzz with Nicole Richie's tweet about her new maternity clothing line with A Pea in the Pod.

The mother of one (daughter Harlow) is expecting her second child, but isn't letting a baby bump get in the way of her design ambitions!

After announcing last month that her jewelry line House of Harlow 1960 was ready to expand into clothing and shoes, Richie managed to simultaneously finish up her exclusive line for stylish maternity retailer A Pea in the Pod.

On her official site, Nicole revealed that she was excited about her shoot (last weekend) for the maternity line with photographer James White.

A Pea in the Pod adds that the company "is excited about their partnership with Nicole Richie and the collection will be in stores in early August."

Pricing info and images aren't available just yet, but considering her House of Harlow line and her maternity style, we're anticipating a dose of Nicole's bohemian flair!