Never
Only for weddings and funerals.
Well, now days only for weddings and funerals.
Once in a while a special milestone birthday party.
About four or five times a year. I actually wish there were more opportunities to really dress up. We need a "senior" prom .... That is, a prom for seniors like me who love to wear beautiful dresses.
Bwahahahahahahaha!!!!!!! Sorry Skip! But ME in a dress!?!?!?! You'd me more likely to catch me in a kitchen..... Cooking...... WITH A SMILE!! Lol!
Weddings and funerals for me too.
For me now-a-days it is just weddings, without a tie. When I retired way back when I swore I would never, ever wear a tie again with one exception. I would wear a bow tie for my youngest daugyhter's wedding. Right now it doesn't look like I have to worry about that either,
A one or twice a year for a wedding or a funeral. Thankfully the weddings are outnumbering the funerals.
We have a Birthday dinner and entertainment (at the 55+ center we belong to) each month for the members that have a birthday that month. We always dress up for that.
I went on a cruise in 1999. Rented a Tux for the formal dinner. And IMHO, I looked quite dashing. Since that occasion, "Formal" meeans a clean Tee with no spots on it.