Most Helpful Guy
I like most of these choices, though I'm not s huge fan of "C." (light blue dress with the bow in the middle). Of course, it depends on the girl whether or not she can "own" the look; and where they are. These would probably fit most places. "D" might not be for a fancy wedding, but for most places, it's great.
Most Helpful Girl
F, easily. I love my circle skirts.
The top half of E is nice too, but something about pairing shorts with blazers doesn't sit right with me.