A child's First Holy Communion is a big step in their spiritual growth, so families naturally want everything to go smoothly on the big day. Amidst all the planning that goes into setting up the place, sending out invitations, and taking pictures, the choice of the communion dress is often the most important thing. It's easy to pick a dress from Trish Scully based on style or personal taste, but it's essential to think about whether or not it fits with the church's dress code for Communion. The answer is yes for many churches in the US.