Senator Lisa Murkowski chose a boldly patterned dress for a speech to the Oceans Law Policy Conference last week (you might want to skip to minute 3:00 when she starts):
I like this dress on her a lot more than I thought I would. The reason it works is all in the geometry - of the print and of the senator's face. The rectangles in the print very nicely echo the shape of her face. I do think the contrast of the colors in the print is too strong for her, but in general she's doing better!