Strategic mattifying will make a bride look glowy, not greasy.
This may look like the ultrapopular "baking" method, but this technique is easier and more serviceable. For brides embracing the dewy look, LaMar advises placing setting powder [his favorite is Laura Mercier Translucent Loose Setting Powder ($38)] on specific areas that can also be prone to oiliness. This includes the sides of the nose, temples, jawline, and along the hairline.
Radiance (which could even be bare, moisturized skin) can read as greasy, especially in photographs. Using this strategic mattifying technique creates a balance the effect of shimmery shadows and highlighting formulas.