What are some upscale restaurants in chicago?

I want to know because I ened to know where to go after prom.What are some upscale restaurants in chicago?
Oh yeah there are a ton of places but a great way to find upscale restaurants in Chicago is to check out an online phone book!!! You can see which ones are considered fine dining or romantic depending on the type of food you like to! There are even restaurants that play live music that might be nice to go to!What are some upscale restaurants in chicago?
Nomi

L2O

Tru

Everest

Fogo De Chao

Gibson's

Avec

Blackbird

Nine

Nacional 27

Keifer's

The Pump Room

Nick's Seafood

Countless others...What are some upscale restaurants in chicago?
I suggest you go to Avec. It is great food, a very cool place and not too expensive for a High School student's budget.