Though primarily for stylish kid fashion rentals, Rainey's Closet Maternity (pay per item) is working on expanding its new maternity collection for moms-to-be. Rent beautiful special occasion dresses for five days and for only a fraction of the retail price from brands like Fillyboo, Ana Brandt, and Sew Trendy. While you're there, you can also shop for any little ones you might already have, too.