Elder D. Todd Christofferson of the Quorum of the Twelve Apostles shares some of his thoughts on this subject.
Why is what I wear to church important?04272_000_024
Our temples and meetinghouses are dedicated to the Lord as sacred space. … A sense of the sacred should lead us to act and speak with reverence in and around these buildings.
It offends God when we come into His house, especially on His holy day, not groomed and dressed in the most careful and modest manner that our circumstances permit.
I hope you will think and feel and dress and act in ways that show reverence and respect for sacred things, sacred places, sacred occasions.
When you develop a deepening reverence for sacred things, the Holy Spirit becomes your constant companion.
You are a Saint of the great latter-day dispensation—look the part.
Illustrations by Brad Teare