Here's a chance to get an Indochino suit properly fitted. Online measuring had been an issue before, and not sure how great it is with this, but should be drastically improved.
Be careful... These guys' house cut is very modern and casual. You young guys getting your first suits need to be very aware of what a conservative suit looks like and ask them for all those features (button stance, length of jacket, narrowness of pants, overall slimness, etc.)