semi formal

So in a few weeks I’m going to be “glamping” (see photo above) at a wedding on a lake in Northern California.

The dress code is “Rustic Semi-Formal.”  

ANYONE HAVE ANY FLIPPIN’ IDEA WHAT THE HECK A GIRL SHOULD WEAR?  Long dress with jean jacket?  Short dress?   Normal wedding attire?  Casual?  Fancy?  I literally have no idea what is appropriate.  I keep envisioning Coachella celebs glamping on Instagram.  WHAT WOULD THEY WEAR?  Help me, Tumblr Wan Kenobi, you’re my only hope.