My girls' school is doing a thing for the 100th day of the school year tomorrow. The optional theme is to dress as if you're 100 years old. We don't really have Today is 100 day at my daughter's school. We dressed her up as a 100 year old woman. : r Mommit For the 100th day of school, many people choose to dress up as a "100 year old" person, typically wearing clothes associated with older adults like cardigans, scarves, glasses, and sometimes even a cane, Today's school theme was to dress like a older person on the 100th day of school 100 days of school ideas old lady Old lady halloween costume, Old lady costume, Kids Old Lady Costume for Girls 100th Day of School Costume Grandma Granny Dress w eBay