It's a summer to remember . . . at the Jersey Shore. Giovanna "Gia" Spumanti and her cousin Isabella "Bella" Rizzoli are going to have the sexiest summer ever. While they couldn't be more different--pint-size Gia is a carefree, outspoken party girl and Bella is a tall, slender athlete who always holds her tongue--for the next month they're ready to pouf up their hair, put on their stilettos, and soak up all that Seaside Heights, New Jersey,...