Cling to your tan, remember the festive playlists, and by all means, keep loading up on sunglasses. But do all that while looking forward to fall, too. Which means, you better start stocking up on soon-to-be-favorite layering pieces. Ahead, we bring you 25 totally lovable, absolutely necessary clothing to ring in the first chilly days of the upcoming season. See ya next year, string bikini — it's been real.