It's all relative. It's o.k. to look good, but it shouldn't cost a fortune. I wore a suit this weekend that looked nice, but was very inexpensive. My pride wasn't lifted up, my self-esteem wasn't lowered, and my wallet wasn't empty. Furthermore, I don't use the rest of my wardrobe to give free advertisement for Nike and Tommy.
True moderation is constant, no matter how much more money is earned.
How sad that many Apostolics are better known for their seasonal wardrobes than their generous giving to the kingdom. The focus should be on how much you are giving to God, whether it be finances or time. Give all you can to Jesus, and He will bless you. If you are blessed with a sportscoat sewn by Armani himself, be thankful and keep on giving.