Leaders and youth are encouraged to wear pioneer-style clothing, see the Making Clothing tab above.
Youth Conference Standards for dress are the same as the guidelines you find in For The Strength of Youth https://www.churchofjesuschrist.org/study/manual/for-the-strength-of-youth/dress-and-appearance?lang=eng.
Show respect for the Lord and yourself by dressing appropriately for Church meetings and activities.
If you are not sure what is appropriate to wear, study the words of the prophets, pray for guidance, and ask your parents or leaders for help. Your dress and appearance now will help you prepare for the time when you will go to the temple to make sacred covenants with God. Ask yourself, “Would I feel comfortable with my appearance if I were in the Lord’s presence?”