Women participating in the Midlife Development in the United States Study (2004-06) were measured for waist-to-hip ratio (WHR). A ratio of 0.7 is considered to be ideal for health and attractiveness. Here are means by race/ethnic group (N = 1,891).
Mean waist-to-hip ratio
The differences seem small, but the gap between Italian and Mexican Americans is sixth-tenths of a standard deviation. The groups are roughly 1 1/2 to 2 standard deviations above the ideal--they're all fat--but keep in mind that this is a sample of middle-aged women, with most of the sample between the ages of 40 and 60.