In this sneak peek for the Pretty Little Liars Halloween episode, we get to see Alison (Sasha Pieterse) and Jenna (Tammin Sursok) face off for the very first time — over a Halloween costume! It turns out both girls were on the cutting edge of pop, and wanted to go as Lady Gaga, back before she was mainstream. Alison goes into full-on fake-nice mode, telling Jenna to back down and leave the Lady G fabness to her — with a smile, of course.
But before you start hating on Ali too much, watch the very end of this clip: It looks like Rosewood's resident mean girl had some stalker problems of her own.
Don’t forget to tune in for the special episode on Wednesday, October 19th at 8 pm ET/PT on ABC Family.
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