Two girls go window shopping during the Christmas season, but a careless wish finds the two on the other side of the glass.  (JaneDoe-2010 version)

I love the original story, but wanted to add a few details and this is what I came up with. (b version is a minor revision to correct some errors.)

I have contacted the original author and have been given their permission to post it.  Thanks for the great story inspiration, I love it.  Please keep creating these great stories.

The author can be found at https://www.deviantart.com/sexygalaxy120