I actually wore this outfit this past weekend, and so plead not guilty to breaking the "don't wear white after Labor Day" rule. However, I believe that when done right, white after Labor Day can definitely be accomplished. And if it still feels like summer, why not dress like it, really.
James Perse tank (similar), Vince denim, Sperry Top-Siders, Louis Vuitton Speedy, Raymond Weil watch, and Urban Outfitters sunglasses. And a nod to the Decemberists, who always release the most summer-esq albums, ironically enough.