Offering up her sisterly support, Jessica Simpson attended the opening night of her sister's performance in Chicago at the Ambassador Theater in NYC on Monday (November 30).
Showing off her cheerful smile, the "Dukes of Hazzard" damsel squeezed past a crowd of bystanders as she headed into the theater to cheer on Ashlee.
Taking to her Twitter account to boost interest, Jess wrote last night, "I'm in NYC for my sis being Roxy in Chigaco tomorrow night. I've looked forward to this moment since I watched her own the stage in London."
A little while later, Miss Simpson added, "Everyone in NewYork come tomorrow night and watch my sister at her best!!! I'll be there celebrating her return!"
Enjoy the pictures of Jessica Simpson out for "Chicago" (November 30).