You'll be surprised at how super easy it is to get dressed this way. Just a white and blue gingham dress shirt married with charcoal dress pants. If you're hesitant about how to round off, a pair of black leather oxford shoes is a goofproof option. Needless to say, you're looking at a wonderful idea for a blazing hot warm weather afternoon. A great combination to demonstrate your maturity even as a 20-something man.