"Best news ever. It's so, so, so, so, so, so, so good."

Yeah, we're pretty sure repeating the word "so" seven times is the opposite of good, which is exactly what fans can expect from Jess' (Zooey Deschanel) sister when she blows into the loft on New Girl this Tuesday.

That's right, we're finally meeting Jess' "bad girl big sister" Abby, played by Linda Cardellini, who describes her character as "the direct opposite" of our adorkable heroine.

We've got an exclusive sneak peek at the all-new episode of Fox's hit sitcom, which included scoop from Cardellini and the cast on Abby's drama-filled debut...