The ladies of Pretty Little Liars celebrated a big milestone in LA on Saturday night: their 100th episode! We caught up with Lucy Hale, Troian Bellisario, Sasha Pieterse, and Shay Mitchell at the bash to talk about all things Rosewood. The costars spent time reflecting on their meaningful journey together, but the main topic on everyone's lips was queen-bee Alison's return. Watch the video above to hear all about season five's chaotic start.
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