dress shirt 
noun
1A man’s white shirt worn with a bow tie and a dinner jacket on formal occasions.His outfit consisted of a white cotton dress shirt with a black bow tie and matching shoes....
- A few minutes later Zack sauntered out of the bedroom in a full tuxedo (minus the dress shirt and bow tie, with his mother's black shoes).
- He wore a black tuxedo with a white dress shirt that was tied at the neck with a crisp gray and silver cravat and a soft lacy tie framing it.
1.1North American A man’s long-sleeved shirt, suitable for wearing with a tie.He was wearing a pair of plain, navy-blue slacks and a light blue, long sleeved dress shirt with the top button unbuttoned to reveal a white undershirt....
- Quickly I pulled out a pair of black pants, my white dress shirt, a black tie and a dark green sweater.
- Tristan was dressed smartly in a white dress shirt, black tie and pants.