Eleanor Mae Swan
Eleanor Mae Swan - informally known as Ellie by her friends - has always been the "ugly" twin compared to her sister Bella. Bella didn't even have to try, not for anything, and everyone liked her. Despite her socially awkwardness.
But Eleanor had to work for everything, and she wasn't the favourite child. She wore glasses for most of her freshman year in high school, and didn't wear the same clothes as her sister.
But now Eleanor is coming to Forks, to live with her dad and sister, (after a minor complication with a few vampires she'd met in Mystic Falls whole she was with her mother and step-dad) and suddenly the ugly duckling is no longer the ugly twin.