New behind-the-scenes photos for the Pretty Little Liars Season 4 premiere (Season 4, Episode 1: "'A' Is for A-l-i-v-e") recently surfaced, and while they're all fun, one in particular caught our attention: This photo of a woman wearing a veil, which was captioned only "Mystery Woman."

This woman is dressed all in black and is wearing black gloves (kind of like "A", right?). In a second photo of her (which you can see here), we see that she's very slender, and looks decently tall, though it's hard to really get a sense of her height becuase there's no one to compare her to.

Who could she be? She's dressed in black, the same as the Liars in the promo photos, so we assume she's attending the same event (probably a funeral) as they are. In the photo to the right, it looks like she has blond hair, though it's a little hard to tell. We also know it's probably not one of the Liars, Mona, or Jenna, since we can see all of their dresses in the promo photos of the episode, and they don't match.

Our first thought is that this is Ali, secretly alive an attending the funeral. It could also be CeCe, another mysterious blonde, but the body type doesn't seem right. Or maybe it's a mysterious new character.

Who do you think the mystery woman is? Share your theories in the comments below.

Find more Pretty Little Liars spoilers here.

Pretty Little Liars Season 4 premieres on Tuesday, June 11, 2013 at 8 p.m. ET/PT on ABC Family.

Rebecca Martin is an editor at Wetpaint Entertainment. Follow her on Twitter @BeccaDMartin.