Note: The current story-arc begins at Strip 621
Jenn's outfit is actually a direct rip-off of Shanex's outfit in Theft of Pride. I wrote Theft of Pride long ago, but always loved the outfit I came up with for Shanex to wear, and lamented the fact that the novel was not a visual medium. So I recycled the concept for Jenn's thief outfit.
In fact, making Jenn a jewell thief is a general way for me to use concepts from Shanex's story.