After the age of 40, weight loss shows dramatically on the face/neck area, with skin becoming loose after the fat supporting it underneath has gone. That makes you look older, obviously. How far should one go to rectify that: do nothing at all (people WILL comment), maybe try few facial exercises (may or may not help a little bit) or go down the invasive/surgical route (people WILL comment, again). I guess it will be up to each individual to decide for themselves, but whatever their decision, one should be true to themselves and not succumb to criticism.
I have always regarded Julia as a beautiful and attractive lady. When I first started watching QVC about 5 years ago and she said she was 49 my jaw dropped, I thought she was in her late thirties! But like most of us at some point the look of our true age catches up with us, sometimes even (dare I say) we might look older than our years. We can't help that. What it matters I think, is to look after and present ourselves the best we can and have positive self image, regardless of size, the state of our saggy skin, eye bags, wrinkles, the lot!
I think it's the same with Julia: if I was to watch QVC for the first time now and she says she is 54 (I think I am guessing her age right), I would think, well what an attractive well presented lady she is for her age (although my jaw would not drop this time as she now looks her age).
I still admire Julia in many ways as I'd rather watch her presenting style over any of the other presenters', although not without reservations: I object to her diva put down remarks she dishes out to models/guest presenters and sometimes she comes across OTT with her 'look at me' mannerisms, but that seems to be part of her personality.
I think she has done well with the weight loss and in my opinion she should not try to lose any more weight, but perhaps persevere with toning exercises if she wishes to further improve her appearence. Granted her age shows a bit more now then it did before, but she has swapped that for much smaller waist which can only be a lot healthier for her. In my opinion she still looks good, loose skin, eye bags and all.