I chose some deco style jewelry to go with her dress, and since she's not sold on a veil I thought a headband would be pretty and fitting for the 20's theme she's going for. Click HERE for the headband shown (I also really like this one). Not sure about the headband OR a veil? Then I'd probably add some earrings like these to add sparkle near her face.
For the bridesmaids I found a few shoe options - click on any of the images below for more information.