Nicole Richie isn’t letting her pregnant belly get in the way of building her fashion world — her pregnancy is the inspiration for a new capsule collection with A Pea in the Pod. After creating vintage-inspired rings, necklaces and headbands for her jewelry brand, House of Harlow 1960, the starlet is collaborating with A Pea in the Pod to produce maxidresses, tops and bottoms for expectant mothers. Available in stores from early August through late January, the collection has yet to be priced. What’s certain is that “it’s her Bohemian style,” said a spokeswoman for Destination Maternity Corp., the Philadelphia-based parent company of A Pea in the Pod. On Tuesday, Richie wrote on her Web site that she shot some images for the ad campaign last weekend with photographer James White.(wwd)