How important is a slim attractive, even sexy, appearance to someone trying to re-enter the job market at 65?

I am considering trying to get a government job again at 65 after being retired for quite a few years. I have kept up and evened broadened creative skills. I know quite a few women who have made more of an effort to not “let oneself go” than I have. I look at all the sexually vibrant 50somethings on shows like NCIS as well as all the good-looking political candidates and high-profile professionals and wonder if this might be critical especially at my age, a difficult age to re-enter the working world anyway. Thoughts or experience?