Yes. If you look closelyShe's going to have the monster face though.
Her cheeks are going split open and reveal her teeth. If you go frame by frame in the trailer when she licks the sai, you can see very subtle tearing from the corners of her mouth (And the obvious Joker scars are an indication of that.). And it's confirmed both by Sisi and I believe the Director that there's more of her than what we see in the trailer. She's going to have her monster mouth, but in a way that makes it easy for the budget while still keeping her true to the character, I'm assuming.
you can clearly see there's something under her cheeks.