I'll start looking at them online. This will be my first concealed carry firearm, and I've never owned a holster (I was never carrying) and I wasn't really sure where to start. At least now I know where to look. I'm also glad to hear that the 1911 is fairly easy to carry, as I love my 1911 and wasn't really wanted to buy another pistol just for carrying purposes.
Comp-Tac, Crossbreed, and Raven Concealment are where I'd look for IWB holsters. You'll probably try a few holsters until you find one you like and that fits you well.
What belt is that?
Any suggestions on where to buy?
That's a Wilderness 5 stitch Instructors belt. You can get them all over. Midwayusa.com normally has standard sizes/colors in stock. Grey Group should carry them. Grey Group also just got in a shipment of Ares Gear Ranger belts which are nice. Pretty much any riggers belt works well. They're great when wearing an untucked shirt, but are a bit too tacticool to wear when tucking.
Grey Ghost Outlet has a Tactical Tailor 1.75" riggers belt on clearance. It's a little too wide to wear with jeans, though.
29-31 Rigger Belt
1.5" fits most standard IWB holsters. 1.75"+ works better with OWB holsters and "tactical" pants IMO.