Originally Posted by
oh_lol
Looks like Tru has a formal dress code, so looks like it may be out (don't travel with jackets etc).
Anywhere else in Chicago that has a more casual dress code?

You can check out Roister, Grant Achatz's casual place. Got its first star this year.
Edit: Just saw you already mentioned Roister upthread. I'd also recommend Boka, right next to Alinea. No jacket would be just fine.