She just has good make-up people and the fact that she is not overweight makes her better looking than the vast majority of all 55 year old women.
As one who spent years in the TV/Film business, I can promise you that 90% of the "attractive" women you see on the tube, you definitely would not want to wake up next to in the morning. Professional makeup, hairstylists and lighting directors can do wonders.
I believe you. I've seen those Enquirer front pages with the "with makeup/without makeup" pics of movie stars. Wow.