Fall = hat season. Today = Local milliner, Cassie MacGregor’s Fall Hat Party. You = clearing your evening plans. Right? Hit up the boutique hat shop above Bolsa tonight for cocktails, treats, and most importantly, gorgeous hats. Peruse autumn fascinators, handcrafted cloche, and new felt-trimmed fedoras. Pick your favorite and pose for the photographer. Then, maybe, grab your fellow party-goers and head downstairs for a French 75 and Twig & Branch flatbread with arugula, goat cheese, and roasted grapes.