I usually wear dockers and a nice shirt, basically the same as what I wear to work. I don't think I've done the suit and tie thing since I was a kid.
I wear flip flops and when someone say's "Why do you wear flip flops to church?" I respond with "Because I just want to be like Jesus" lol... Then I explain he w**** flip flops to church all the time.
Did they even have flip flops back then? I would guess that Jesus probably wore sandals or went bare-footed.
Casual slacks and nice shirt with a sport coat on most cool weather Sundays... casual slacks and nice shirt without coat when it gets warmer... jeans on night or mid-week services. No ties mandatory, I rarely put a tie on anymore unless we're at a wedding or funeral. But please, no flip-flops. We're not at the beach.