Yep, it's true… and it has been true for over 150 years. If you want the dress to stay white instead of a dull gray, then you'll probably need to dial in some positive exposure compensation. The light meter in your camera will see the white dress and think it's bright, but it isn't bright–it's just white! The camera tends to compensate for this large “bright” spot in the photo and makes the exposure of the dress too dark. Positive exposure compensation fixes this problem in a jiffy (Thanks Jess Joey)
Around your world in a day: Create a meaningful backdrop for your engagement photos by revisiting nearby sites that are significant to the two of you: the restaurant where you had your first date, the ice cream shop you frequent on Sundays, the bus stop where you shared an umbrella—you get the idea. While the camera's snapping, retell your best couple stories and relive a few of the moments that brought you together—it's a perfect recipe for a series of romantic, fun candids.
There are a few bonuses to using accessories well (as well as layers). One is that changing them up a bit throughout the session can give you multiple looks without having to do many wardrobe changes. They can also be something that the subjects can interact with. A sassy little tip of the hat, holding the ends of a scarf while running and letting it billow behind you, grabbing the lapels of a husbands jacket while pulling him close for a kiss – all these little gestures and ways to interact (and become more comfortable in front of the camera) can be made possible with styling choices. Many of my sessions will feature items used outside their intended use or subject. My girls are often seen in mommy’s hats or scarves (scarves can be used in different ways like wrapped around their shoulders, as a hair piece, etc) and they love to wear my costume jewelry.