Plus Size Clothing Old Navy Downtown Chicago?

If someone could help me out I'd really appreciate it, I'm wanting to know if there is a plus size section in Old Navy, In downtown Chicago area. Ive been there once but cant remember if there is one there I'm wanting to buy a nice outfit for my girlfriend there and shes on the heavy side. And need to know if they have a plus size section… Or if there like everywhere else you have to go online to order plus size exclusively online.