Credit: Mike Windle/Getty Images Photo: Shay Mitchell at the H&M Isabel Marant VIP Pre Shop Event in West Hollywood, California on November 12, 2013

Earlier in the week Shay Mitchell (Emily) said "chop chop" to her long hair, posting a photo on Instagram of her brand new bob haircut. Everybody's doing it, you guys. And yes, we're looking at you, Jennifer Lawrence, Miley Cyrus, and Jennifer Aniston.

So if our Pretty Little Liars gal really did join the short 'do trend, then why was her hair looking so long and sleek at the H&M Isabel Marant VIP Pre Shop Event in West Hollywood, California yesterday? We have a few guesses, but let's remember that mysteries in the PLL world are always up for debate.

It's possible that Shay pulled an Ashley Benson (Hanna) and said peace out to her ponytail only to get extensions put in the day after. Just imagine how many PLL episodes you could get through during all of that blow drying, highlighting, and ironing time. Then again, when Shay debuted her bob, it looked super curly. Maybe she just straightened her hair for the H&M event, making it appear longer than it did over the weekend.

We're stumped, but we know one thing — Shay looks hot no matter what hairstyle she's rocking.

Catch the Pretty Little Liars Season 4 winter premiere on Tuesday, January 7, 2013 at 8 p.m. ET/PT on ABC Family.