There is a shirt for every occasion. 

Tuxedo shirts are designed for formal wear with pleated or piqued fronts and french cuffs.  Generally, these shirts are white and have room for removable studs on the placket.

For sport casual, try a button down shirt.  Usually these are made of 100% cotton fabrics of broadcloth or oxford weave.  The convenience of a blue or white shirt of this type in your wardrobe is that the button down collar can be worn without a tie while holding the collar in place.

For business, look for removable collar stays to maintain the shape of the collar.

For the discerning gentleman, custom shirts are available by design at Heimie’s Haberdashery.  More.