And I don't have a problem with people doing that. As long as it doesn't become a requirement for good fellowship.
Some Sundays I dress up, other Sundays I'm more casual. I don't do it to "please Jesus", though, because I still do not believe that Jesus cares how we dress..
Dressing up for Easter is fine, if you feel the desire to do so...
Oh, and I don't wear suits and ties.... used to, back in the 60's, but now, dressy is more nice jeans, dress boots, and a nice blazer type jacket. Casual is more jeans/cargo pants and a loose, cool button up shirt with collar.
I know of some churches that would think I'm a heretic for not wearing a tie... I don't go to those churches.