A well-fitted blazer that nips in slightly at the waist creates a gorgeous hourglass shape. Wear it open over a simple camisole for a very "off-duty model" vibe.
At the end of the day, the most important element of the "top model" look isn't the clothes you wear—it is how you wear them. The fashion world is increasingly embracing diversity in body types. Rocking your curves with confidence and posture will do more for your look than any styling trick in the book.
Soft and feminine, a scoop neck opens up your chest area without being overly revealing.