Here's the suit worn by Dr. Breen in Half Life 2. It is categorized for normal wear and formal. That mean old Administrator! It is made for elders, so I could get Breen's hair color right without needing special meshes. It's also a recolor of a Maxis mesh, so there's nothing additional to download.
If you want the Sim pictured,
come grab him from my page on The Exchange.