Well, I certainly don't advocate wearing any of those things to church, but people might dress a little more relaxed at some church services, like "Church on the Beach".
![](https://oceanreefresorts.icnd-cdn.com/userfiles/destin-methodist-church-beach.jpg)
(Their view is "For the Lord seeth not as man seeth; for man looketh on the outward appearance, but the Lord looketh on the heart." 1 Samuel 16:7)
Yes, it would be inappropriate to wear a suit and tie to "Church on the Beach".
That picuture shows a beautiful place to hold a service!