While our Army Ball In Louisiana is always White-Tie formal attire for spouses-I have heard of other units/states having different dress codes. Here is a chart if you are wondering what is acceptable to wear for a particular dress code.
THANK YOU! At my school, people complain about the rule against showing bra straps. WHO THE HECK IS GOING TO LOOK AT IT AND BE LIKE "WOW I absolutely LOVE the pattern on your bra will you marry me?" (I hate my school)