Whilst an ivory dinner jacket is appropriate in a Monte Carlo casino, it’s not so appropriate in a Las Vegas casino unless you’re James Bond. Bond wears one in Diamonds Are Forever at a Las Vegas casino where most people dress down. Apart from Bond’s wide bow tie and the wide pocket flaps on his dinner jacket, this is a classic warm-weather black tie outfit. It looks especially traditional compared to the flamboyant black dinner jacket Bond wears later in the film. The ivory dinner jacket has the same cut as the other Anthony Sinclair jackets in the film have: a clean chest and natural shoulders with roped sleeveheads.
The button one dinner jacket has medium-width peaked lapels with a very high gorge. Today you can find examples of peaked lapels where the peaks rise up above the shoulders, but the peaks on the dinner jacket are about as high as peaks can tastefully be. The jacket’s hip pockets are slanted with large flaps, a utilitarian pocket style that is out of place on a dinner jacket. The slant gives easier access to the pockets on horseback, and flaps keep items inside the pockets. However, the benefits of slanted and flapped pockets are unnecessary on a dinner jacket, and such a sporty pocket doesn’t have the elegance of a straight jetted pocket. The dinner jacket also has deep double vents, which are another practical sporting element added to this dinner jacket that breaks from tradition, but Bond’s dinner jackets have often had double vents. There are four buttons on the cuffs, and all of the buttons on the jacket are white mother-of-pearl.
With the jacket, Bond wears black trousers with a darted front, tapered legs and a satin stripe down each leg. The white-on-white stripe shirt from Turnbull & Asser has a spread collar, double cuffs and pleated front with mother-of-pearl buttons down the placket. Connery’s bow ties always followed the trendy width, and his wide black satin silk bow tie in Diamonds Are Forever is no exception. Since Bond keeps his jacket buttoned, we can’t tell if he wears a cummerbund with this dinner jacket like he does with his black dinner suit later in the film. In the unlikely event that he is wearing a cummerbund here, it probably isn’t the same fancy cummerbund that he wears with the black dinner suit. He wears the same black patent leather two-eyelet derby shoes that he later wears with the black dinner suit.