<Li> Janel Parrish portrays Mona Vanderwaal , the original and first `` A '' . She is the person who stalked Alison before her disappearance , and did this as revenge for Alison crowning her `` Rosewood 's biggest loser '' . After Alison disappeared she became best friends with Hanna Marin and they transformed themselves into the most popular girls at school , taking Alison 's place . </Li>
<Li> Janel Parrish portrays Mona Vanderwaal , the original and first `` A '' . She is the person who stalked Alison before her disappearance , and did this as revenge for Alison crowning her `` Rosewood 's biggest loser '' . After Alison disappeared she became best friends with Hanna Marin and they transformed themselves into the most popular girls at school , taking Alison 's place . </Li>
pretty little liars tv show who is a
pretty little liars tv show who is a
Mona Vanderwaal
Mona Vanderwaal