Well, I can’t honestly say I feel my accomplishments have ever been dismissed because of my looks (I think I’m very attractive and I’ve been told I am quite a lot…a rather subjective thing, imo) so I’m not sure if my experience even relates to this specific topic.
But I HAVE encountered issues in the workplace related to my appearance/looks.
The most common has been (and as recently as a year or so ago) the perception that I am quite a bit younger than I actually am (44, 45 next month). I’ve always looked young for my age, getting carded until I was in my early 40’s and still sometimes do, but that seems to be changing as I get older…GOOD! Believe it or not, I don’t consider it a benefit…looking “good” is fine by me, I don’t feel any need to look 25. 
That has sometimes translated into not being taken seriously, treated with respect or given the level of responsibility I am capable of.
Year back, I took over a preschool class for another teacher who was leaving. She was about my age, but made it clear as she showed me around that she thought I was younger and inexperienced. She kept telling me no-brainer things until I informed her, as casually and non-confrontationally as I could, that I held a degree in Child Development and had about 10 years experience working in the field. Her atttitude changed immediately and we got on to the stuff I really needed to know. We went on to become great friends. 
About 5 years ago, I took a short-term job at a thrift store (we were planning on an out of state move and I didn’t want to take on anything more lasting and then quit on them but needed to sock away some money).
My supervisor, a woman in her 50’s, was very condescending and critical in all our interactions. I finally quit, leaving a letter for the manager telling him exactly WHY (her managment style and apparent personal vendetta).
My last night there, I told a co-worker, “I refuse to be treated like a teenager!”
He, a 45 or so yr old guy, said, “Well, you LOOK like a teenager.”
I don’t think I DO, but apparently I was judged as being one, or at least as being much younger than I was, and therefore assumed to be incompetent and in need of constant guidance/supervision, despite the quality of my work, which was above and beyond.
Last time this occurred was at one of my last temp jobs before I went back to college a few years ago. I was working a large, complicated project with a large private bank and the 50 yr old or so woman who was in charge of me was really micro-managing the project and dumbing things down to a noticable degree. I had a much better system in mind for how to do it, but she gave no indication of being open to my input.
We were discussing something to do with it one day and started chatting about kids, grandkids, etc…and I casually mentioned that I had a 17 year old son and 10 yr old daughter and a few other small hints re’ my age and experience level.
She looked sharply at me, seeming to reconsider her assumptions, and from that moment on, she entrusted me with a much greater degree of responsibility. She pretty much left me to it and I did it my way and finished ahead of schedule.
As I’d suspected, she’d assumed I was some 20-something twit the agency had sent and needed a babysitter. :rolleyes:
The other way in which my appearance has hindered me professionally (and this has, to my knowledge, only happened a few times) is when being passed over for or harrassed on jobs because I was, apparently, considered a threat to other women in the workplace or the wives of male co-workers.
One temp job was so bad in this respect that I left after 2 days and refused to return due to the hostile working environment the woman training me created. I mean, I can and have put up with a LOT, but this was extreme. :eek:
I figured out (and this was confirmed by someone in another dept. at the company) that she felt very threatened by my presence and set out to drive me off. Very odd situation; she was 8 mths pregnant, her boyfriend worked there as well, and she was the ONLY other woman in the office. Some sort of weird, female alpha bitch crap I wanted no part of! (any more than I wanted any part of her boyfriend or any other man there) :smack:
And I’m pretty sure I’ve lost a few job offers based on considerations of my appearance and office “sexual politics”.
And yes, I have experienced sexual harrassment, but not too much or too overt. More along the lines of the 19 yr old errand boy hanging around my desk and showing up for all my smoke breaks to chat me up than a boss or senior co-worker making unwanted advances.
But no, can’t really say that my professional achievements, IF KNOWN, have been dismissed due to my appearance. No one has ever suggested that I slept my way to the top or got preferential treatment in college or the workplace because of looks.
But those who are considered “good looking” do experience discrimination sometimes, though it takes different forms than those considered “not good looking”, and is probably offset more by preferential treatment. 