I remember seeing an interview with her and two other actresses YEARS ago, and they were talking about what they tried to emphasize / de-emphasize in their bodies, and Hilary said that she had broad shoulders and a short neck, so she wore a lot of scarves.
That sounds like me, broad shoulders and short neck. Except scarves don't look good on my short neck haha. I guess her trick worked cause I never noticed her shoulders til now. Shrug.