Khloe Kardashian high-styled it outside Paris Friday ... hours before her sister Kim ties the knot with Kanye West.
Khloe -- who by the way looks great -- was at Château de Wideville posing in the gardens.
She was there with Kim, Kris, Kendall AND ... Valentino.
As we reported ... after the ceremony there will be a reception, but the big bash is Saturday in Florence at Fort Belvedere. There will be a second event in Florence, but Kanye is keeping details top secret.