Partner and I are invited to an evening wedding reception later this year and the invite clearly states "black tie". My partner has outgrown his dinner suit too many pies so needs to hire/buy another. Plus a shirt, plus new shiny black shoes. Looking at well over £150 before gift, drinks at the bar, travel expenses etc. AIBU to think it's a big ask especially as it's a second marriage and we paid out plenty the first time round!! Only see these people about 2 or 3 times a year. Are we just being grumpy (quite possible) or is it a bit naff to tell people what to wear to a 4 hour evening do and expect them to fork out so substantially.