I wore this dress to work today, and I think this outfit is perfect to wear for an internship! This Banana Republic dress is super comfortable and appropriate, but the back is fun! I did learn the hard way that bra straps will show (I was cringing while editing these photos because they're peeking out and it's my biggest pet peeve... whoops).
For work/internship outfits, I always recommend that you wear comfortable shoes that you can actually walk in and a modest dress that isn't too patterned or crazy (unless you have a fashion internship of some sort, lucky you). I also take a larger tote everyday that fits my water bottle, keys, wallet, and laptop. I tend to wear not too many accessories because I don't want to get distracted. What do y'all like to wear to work?