Or you could email them (dl.delivears@disney.go.com) and attach those pictures and ask them what the merchandise number is. That way when you call the 1-800, it's easier to tell the CM exactly what shirt it is.
When you email them, it will take about 2 days for a CM to get back to you, but they will give you a number for each shirt. I know it can be hard to explain what some merch looks like over the phone.