Vestments

This morning, before mass, Marty (the other altar server) and I were talking. The conversation went well;  then I asked Marty if the church had a priest schedule, he said "no". I told him "At my home parish, I can usually tell who the priest is by looking at the vestments" so I looked at the vestments and I said to Marty "The alb is kinda small. So the celebrant is....," he finished for me "Fr. John". I nodded. But Fr. Erik came in instead. Marty said "You were saying?". So I asked Fr. Erik if he was the celebrant today. He was. I said to Marty "I was saying"  Fr. Erik said "I have no idea  why Fr. Johns vestments were here".