One of my favorite ways to transition summer dresses to fall is to add a leather jacket. Here, I topped my cap sleeve Free People dress (on sale here!) with a lightweight Zara leather jacket. Mine is old but I found you some similar and similarly priced ones below.  Also of note, my block heel ankle- wrap shoes are on sale and come in three colors! Shop all the loot below.

Dress  //  Shoes here and here // Jacket similar here and here  // Sunnies