That is a great question! The Service Dress trousers are different than the Dinner Dress trousers.
The Service Dress Trousers have the standard waist and have belt loops. - https://www.marlowwhite.com/navy-male-service-dress-blue-trousers

The Dinner Dress trousers have the high waist and they do not have belt loops. They are your standard tuxedo pants. - https://www.marlowwhite.com/navy-male-high-rise-black-trousers

If you have any further questions please feel free to reach out to us at 800-255-6136.

Sir,
All orders placed online come unaltered. The sleeves, hem, braid, and patches will need to be applied by a local tailor. We ask for measurements when ordering online to ensure you selected the right size for your shape. As our pattern runs much smaller than your average jean size. For example, if you wear a 32R in your jeans, you will more than likely wear a 34R in your ASU trousers. For females, they will wear anywhere from 4 to 6 sizes larger than what is worn in their civilian jeans and dress sizes.
If you make an appointment at our Kansas or Virginia store, or attend one of our fitting visits, we will complete the alterations for an additional fee. Those prices can be accessed on our alterations page.