‘Pretty Little Liars’ star gained 70 pounds in 1 year, claims 15 doctors couldn't properly diagnosis her
"Pretty Little Liars" quickly became one of the most talked about shows on television when it premiered in 2010. Actress Sasha Pieterse was only 13 when she started playing the presumably murdered, 15-year-old "queen-bee" Alison DiLaurentis. A few years later, she would start to notice changes in her health, particularly her metabolism.