Love / What should I wear for a POLISH WEDDING? My husband wears his kilt.. [11]

HI, I HAVE BEEN INVITED TO ONE OF OUR POLISH WORKMATES WEDDING.IT IS IN POLAND AND I WONDERED WHAT I SHOULD WEAR. CAN I WEAR TROUSERS OR DO I HAVE TO WEAR A DRESS. MY HUSBAND IS WEARING HIS KILT.THANKS

VAL