Answer: tuxedos

AnswerCrossword Clue
TUXEDOS

Semiformal duds

TUXEDOS

Penguin suits

TUXEDOS

Black-tie garb

TUXEDOS
Oft-rented suits
TUXEDOS
Shiny suits
TUXEDOSSuits named after Indian word for wolf.
TUXEDOSEvening wear.
TUXEDOSMen's wear
TUXEDOSEvening gowns' companions
TUXEDOSSemiformal wear
TUXEDOSBall wear
TUXEDOSSome gala wear
TUXEDOSProm rentals
TUXEDOSProm get-up
TUXEDOSUnion suits?
TUXEDOSRelatives of tails