20/20

7 Going On 70: A Barbara Walters Special

Inside the lives of two young girls who have progeria -- a rapid aging disease.

PHOTOS: '20/20: A Barbara Walters Special'

Barbara Walters Progeria
Barbara Walters Progeria
Barbara Walters Progeria
Barbara Walters Progeria
Barbara Walters Progeria
Barbara Walters Progeria
Barbara Walters Progeria
Barbara Walters Progeria
Barbara Walters Progeria
For parents Marla and Tim Halko, it's important for Kaylee to live a full and happy life like normal kids. The pint-sized girl attends cheer dance school to feed her love of dance, and rides the school bus with her peers. Kaylee is pictured with her parents and Barbara Walters. (Donna Svennevik/ABC)
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