Dress code at Moo?
The restaurant says, "Elegant casual/business casual". It's probably the most expensive luxury steakhouse in town, and there's usually a lot of celebratory dinners being held there. It's set in a very expensive boutique hotel (rates start at about $500/night). There are always people in Boston who don't believe in dressing up for even the fanciest venues. But I'd wear a jacket, at least.