I've recently moved away from Pittsburgh, and Girasole is one of the places I miss the most. It's tiny and can be loud, but the food is amazing, the atmosphere is fantastic, and I can't wait to go back. I'd especially recommend the pumpkin ravioli, which appears on the menu in the fall.
Because it is small, it's well worth calling ahead for a reservation. Otherwise they will take your name and cell phone number, and you're free to wander around Shadyside until a table opens up.