Just read this article about necklines in WSJ. I'm pasting it because of paywall
http://www.wsj.com/articles/th.....1423086508
Q: I have always avoided turtlenecks because my neck is short and my face is full so I look deformed. But since I lost weight, my neck is sagging even more and I wonder, what I might do (short of plastic surgery!) fashion-wise such as wear certain colors or even necklaces.
—B.T., Des Plaines, Ill.
A: A turtleneck may hide an aging neck, but most mature women will find that they look prettier and younger in an open neckline, wrinkles notwithstanding.
Try this optical trick that’s popular with movie stars and TV anchors of both sexes. Put on a crisp white shirt, always leaving the top couple of buttons open and pop the stand-up collar so it grazes (and partly hides) the sides of your neck. You’ve created a flattering portrait neckline that sets off your face, downplaying your neck altogether.
Or try a V-neck sweater, jacket or dress featuring a narrow, ruffled collar. If you wear your hair a bit longer, layered right below your chin, with wispy bangs (think Diane Keaton), you’re gently framing your face and neck.
Now choose your necklaces carefully. Skinny gold chains with a pendant and pearl chokers tend to sink into the crevices of your neck. Instead choose bold, chunky translucent beads and stones or a chunky crystal necklace that falls near your collarbone. Such see-through necklaces reflect light and brighten your face. Also a long bright print scarf (never a neckerchief) folded loosely around your V-neck (leave some skin showing) creates a pretty frame.
Men will find a neck-friendly silhouette in a zip-front merino wool turtleneck sweater left unzipped to around your collarbone. With that patch of skin exposed, you look lively and elongated—not stuffed into a turtleneck or a crew neck that creates a severe line across the base of your neck.
Remember that an open or V-neck will always be more attractive than a turtleneck—and stop feeling bad about your neck! Let’s hear it for bright colors, bold primary colors like red, orange or purple .They’re assertive and youthful and not as drab as black and taupe all the time.
Pose for photos head-on, and not in profile. Stand straight up with your head high, always with a smile that will pull up your neck as well. And for any formal portrait or close-up, do what every public figure does: Use digital retouching to lightly rejuvenate your face and neck.