Krysten Ritter Joins 'Gossip Girl' Spin-Off

Krysten Ritter is keeps it cute in a purple Sonia Rykiel dress at the premiere of her new movie, Confessions of a Shopaholic at the Ziegfeld Theatre on Thursday (February 5) in New York City.

The actress finished off her look with gold Giuseppe Zanotti peep-toes, a cute Jenny Yuen satin clutch and Van Cleef & Arpels diamond ring & bracelet.

According to THR, Krysten was just cast in the new Gossip Girl spin-off as Carol Rhodes , Lily van der Woodsen’s older sister and black sheep of the family. The pilot for the spinoff, which follows young Lily’s wild teen years in 1980s California, airs on the May 11 episode of Gossip Girl.

Confessions, which also stars Isla Fisher, is in theaters on Friday, February 13!

20+ pictures inside of purple-licious Krysten Ritter…