Party Attire could mean casual, cocktail, or black tie, depending on the venue. Generally, the less formal the location where the event is held, the less formal the attire. Double-check with your hostess to be sure.
Before you can get dressed, you have to know what kind of gathering this is going to be. A fraternity reunion might not call for the tuxedo. Casual dress means that you should wear a sport jacket, fine slacks, and a button-down shirt or turtleneck.Leave the jeans and Hawaiian shirt at home.Adopt New Fashion.