Not exactly what you asked, but I used to work with this insanely skinny guy, early 30's maybe, 5 ft 8'ish inches tall, and I don't that he tipped the scales at more than 120 lbs.
I opened the newspaper one day and was shocked to see that he had recently married. The photo showed that his bride easily outweighed him by a factor of at least 3, maybe even 4.
Yikes!