The Key Details Revealed by the Orange Is the New Black Season 3 Trailer

Petty played Lolly, a fellow prisoner being transported with Piper back in the premiere episode of season two, but she's a big part of the new trailer, implying she's playing a new regular character. From the looks of things, she's happy to be at Litchfield but could be an antagonist, since we see her getting punched by Alex in the preview.