I love having an identical twin. It's such a privilege.

"Throughout my life, people have been fascinated by the fact that I'm an identical twin . Usually, people love it. They'll say: "Oh my God! There are two of you!" My identical twin sister , Aimee, and I didn't spend a day apart from the moment we were born until we were 16. Back then, it was almost impossible to tell us apart , but these days, the differences are slightly more apparent - my face is rounder, and Aimee's hair is shorter, among other things."

"At school, though, we played upon being confused with each other . At the teachers' request, I wore yellow ribbons to school, and Aimee wore blue. Most days, we swapped our ribbons so we had one of each color, and then we could swap classes. We played to our separate strengths: I took Aimee's Japanese and music exams, and she took my tennis exam for me."

"At 16, we both went to cadet camp, but Aimee went home sick after the first night. Within two hours of her departure, I was standing at a phone, calling her. It felt too bizarre not having her there to talk to. She moved to England after university, and we emailed and texted every single day. It was during that time that I began to"

Sarah and Aimee Charlwood are identical twins who did not spend a day apart from birth until age 16. They were nearly indistinguishable in appearance during childhood, with only small differences emerging later. They deliberately swapped classes and used different colored ribbons to fool teachers, taking each other's exams and exploiting each other's strengths. Strangers sometimes made insensitive comments about their appearance, and inquiries from others were frequent. A separation at cadet camp at 16 prompted immediate contact after Aimee left sick. Aimee later moved to England after university, and the sisters maintained daily email and text communication.

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