Nothing like an afternoon with a girlfriend gossiping, laughing out loud and sipping a delicious starbucks! In my opinion, starbucks equals a very comfy and casual outfit with a touch of bling.
I would not wear heels and be all pampered to go there. I opted for a Lauren Conrad inspired look AS PER USUAL. PS : My favourite drink : the caramel frappuccino with LOADS of whipped cream :)