My favorite mini trend for Fall is the Peter Pan collar. I first spied it in the Vuitton 2011 Resort collection and then it was a big statement in the LV Fall show above. I love its sweetness and have been wearing one with little sweaters much like Alexa Chung below.
The best part is that they are just a collar or a dickey which is easy to wear under anything and does not add extra bulk. One of my favorite versions is made by CeCe Toppings- they are inexpensive, come in numerous colors and restock weekly.