August slipped away in the blink of an eye, and while it's still technically summer until September 21, we can't stop thinking about our fall wardrobe. Eva Mendes also says that autumn is the best time of the year - partially because of the fashion - and she spilled the tea on her top fall must-haves. Her number one selection? A classic trench coat. In a recent Instagram post, Mendes wore the effortless trench coat of our fall fashion dreams. While you may think you need to splurge on this specific outerwear, we're here to tell you that's not necessarily true.