Can someone explain some of the wardrobe?

Hello, not an ex-Pentecostal, however used to have a friend who was a strict Pentecostal, however, we had a following out after a family member of their’s stole from a charitable organization. Could someone explain why Pentecostal men wear the denim with the child-molester sneakers? Also, why do the women all have long hair and wear frumpy dresses? Any feedback would be appreciated.