Real Time Mirror

19.  UV/Image Editor: Set Active UV Map 
  • UV/Image Editor menu >> Active UV Map box >> Mirror_UV
20.  Select Image 
  • UV/Image Editor menu >> Image List >> MirrorReflection.PNG
21.  UV/Image Editor: Select all vertices 
  • UV/Image Editor >> Select >> (De)select All
22.  UV/Image Editor: Mirror X-axis
  • UV/Image Editor >> UVs >> Mirror >> X Axis
Note:
  • We have to mirror the UV verts on the X-axis.
     
  • This will let the mirror properly reflect the images.  Left will be left.  Right will be right.