You know it. She worries about it alot more than I do.
When we first got together 8 years ago, she was 5' even, and a good 110 pounds. She's put on about 25 pounds in the time since. It bothers her, but it makes little difference to me. I can actually take her to a club and not have to worry about having to get ugly with some redneck that don't know how to act in front of a beautiful woman.
Some women are neurotic about weight after they're married because of a little insecurity. I dunno... I think a lot of women are nuts in general about size.