The /gts/ board-tan should wear some kind of animal print clothing since it's a staple of all giantess related media. I was thinking maybe a cheetah print skirt or snow leopard print panties. As for personality, she's a well meaning girl who just tries to go about her day without qualms and doesn't intentionally harm people with her size, but isn't surprised when she unintentionally does. She's typically blissfully unaware of the goings on of the tinies around her. I was thinking of calling her Giana, since it almost sounds like giant.
I'm down for multiple tans, /fast/ has a couple.
Just make the micro an anon. He'll sit on her hat or something.