Clockwise from top left: A wide-brimmed hat, like Tilly's Textile Floppy Hat ($14), will keep the beating sun off mama's head. Liz Lange for Target Short Sleeve V-Neck Knit Dress ($27) will keep an expectant mama cool at work or while out for dinner at night. Don't forget to lather on the sunscreen every day with a paraban-free version like Kiss My Face Sunspray Lotion ($16). A cool, loose shirt, like Old Navy's Maternity Smocked Floral Top ($24) keeps things cool, as does Gap Maternity's Bold Floral Graphic T ($24). A stainless-steel water bottle, like CamelBak's will ensure that the mama-to-be stays hydrated throughout the day. Flats, like these espadrilles ($29) provide more support than a flip-flop, and are easier on the back than a wedge version. For the beach or pool, a tankini, like the ASOS Corsage Tankini ($22) is fun, while keeping things comfortable.