‘PLL’ Star Sasha Pieterse Is Envious of Original Sin Series (Exclusive)

Sasha Pieterse opens up to ET's Lauren Zima about 'Pretty Little Liars: Original Sin' and 'Ivy + Bean,' which starts streaming Sept. 2 on Netflix. Sasha reflects on the original ‘Pretty Little Liars’ series and reveals why she’s ‘envious’ of the new cast.