Old Navy Maternity Plaid Flannel Pajama Set The Old Navy Maternity Plaid Flannel Pajama Set ($40) looks like something straight out of a holiday movie. It comes with matching red-, white-, and green-plaid cotton top and bottom. The bottom has an elastic waist and drawstring, and the top has vented sides and extra fabric over the belly to fit your growing baby. Image Source: oldnavy.gap.com Old Navy Maternity Plaid Flannel Pajama Set $40 from oldnavy.gap.com Buy Now