Bonaparte   New York Magazine Pick   The Collection: Understated elegance for a sophisticated bride. Designer Junko Yoshioka, who takes her inspiration from the romance of the sea, favors innovative styles, from off-the-shoulder necklines to mermaid skirts.   The Gown: Silk one-shoulder mermaid gown.   The Price: $4,100   Where to Buy: Gowns range from $2,000 to $7,000 and can be purchased at Bonaparte.