Our alter server was wearing a bunnyhug and jeans today (it is a daily mass, and most of the people are students taking a break from studying). Sunday mass usually means a guy (funny enough, most of our alter servers are guys) with a dress shirt, most of the time a tie, and some nicer pants (sometimes dress pants). Albs are never used (except by the priest, of course, along with the other garments I can’t remember the names of).
I’m not sure why people are getting distracted by what the alter servers are wearing though. Last time I checked, we were at mass for Jesus. That’s where my attention is, on the readings and then on the prayers during the Eucharist. Not on what the alter server is doing/wearing