Ha ha ! had my hair cut from chin length to a Judy Dench last week ....husband has not noticed.....this is not unusual ! 
A new definition of what constitutes British
First must say that I wear dresses or skirts once in a blue moon!
Today, wondering what best to wear in the heat, I put on a lovely loose linen dress I have only ever worn once before, and that was at a dd's wedding (fairly casual but in a hot location) nearly 2 years ago!
He hasn't noticed, or if he has, he hasn't commented.
Not that I'm really surprised. In the past I have been known to comment that he wouldn't notice if I went out topless with my nipples painted green...
Ha ha ! had my hair cut from chin length to a Judy Dench last week ....husband has not noticed.....this is not unusual ! 
My husband never comments on what I wear. As I dress considerably better than him, he wouldn't dare! On occasion I ask him "if I look alright in this". If he says yes, I immediately change into something else...I cannot trust his instincts when it comes to clothes!! No animosity at all, as we are made for each other in so many other ways, but appearnce isn't one of them!! Ha Ha.
Trimmer malfunction a few months ago led to my beard being reduced to stubble for the first time since 1967. OK, it wasn't full hipster/Edward Lear limerick/Charles Darwin luxuriant, but DW and DDs didn't notice.
The reason we don't always notice changes in our loved one's appearance is that we are lost in rapt contemplation of the inner woman. Mind you, I think I would notice topless with green nipples.
Mine always notices... but always uses the same formula....'THAT (whatever) looks better'
Don't know whether to be pleased or wonder what on earth I looked like before
We saw a production of the Marriage of Figaro recently, set in the 1960's. DH said "Didn't you have a dress like that?" referring to one worn by Susanna. I did, also in the 60's. I was very touched that he remembered.
Once on holiday I walked into a shop wearing my denim jeans and a dark jumper, and bought a new outfit, as weather had turned so hot and I felt unsuitably wintry, I chose a floaty skirt and white lacy top. I changed into my new stuff in the shop and carried out my old clothes in a carrier bag. When I met up with my OH he asked .' Did you buy anything?' So I said 'no, there was nothing I liked' 
The DH doesn't really niotice what I look like or wear except on special occasions. I try to look after myself and am no Angelina Jolie for sure. However, I look better than a dog's dinner and, when we go out, he says to me in a bemused voice afterwards, 'You were the best looking and best dressed woman there.' It's the competitive thing. All the men have to have the best - well it used to be jobs, cars, salaries, holidays, children and so on - and now it's pensions and cruises. So when they are together with the wives there's a competition. I guess at this time of life it's least worst.
Grumppa. - DS had a glossy chestnut full beard for most of this year. One weekend he visited (as he does at least once a month) and neither I nor his DDs (17 and 23) noticed for 2 days that the impressive Edwardian beaver had been reduced to a neat arrangement of short Shoreditch topiary! He looked rather crestfallen! We only realised then as his DSis on the phone asked him what we'd said. We hadn't ...
My friend comments on everything I wear and is very interested in ladies clothes. His late wife was a window dresser and "a good clothes horse" as he calls it" horrible description of her I think, but he thinks it is a compliment. His own dress sense is however lacking quite a bit, he takes advise from me and does listen. I have always found it so strange that he notices ladies fashion far more than men's, but he says it is because he has worked with women all his life in an office and there was huge competition between the ladies.
DH had a 'full set' as it is known in the Royal Navy (moustache and full beard) and when he shaved it off I didn't notice
1st place Dana6789's husband
2nd place Jalima
3rd place VIOLETTE'S husband
What are we like?! 
Plenty of of evidence here of men passing unnoticed when they suddenly went clean-shaven or heavily cropped. BUT none of us started a thread moaning about our wives/partners/assorted loved ones. We just maintained our customary, and suddenly visible, stiff upper lip.
I suppose it depends on how observant we are generally. My hubby is not at all. He can walk through a room and not notice things that have fallen on the floor, and if I ask him to move the red box in the porch he will go in there, look, and come back to say he can't see a red box!
Years ago, after finally managing to lose most of the excess 3 stones I had acquired with my two pregnancies, we were going to a garden party. I bought a lovely floral dress that cost about twice what I would usually pay from C and A, and he said "I haven't seen that dress before, has Jane given it to you?". Jane was 5 stones heavier than me. The dress went back to the shop.
But like another poster, he doesn't notice his own clothes either. We have both deliberately lost weight recently (about 1.5 stones each) and he decided he could now fit into clothes he hadn't worn for a while. We were visiting our daughter's in-laws who are always smartly dressed, and I noticed that the trousers he had chosen were not only stained on the front, but frayed round the bottoms - clearly very well-worn.
It takes all sorts, but I do think a husband and wife should take note of their other-half's appearance at least to some extent. My hubby too tells me an outfit looks nice when I know it doesn't.
Oh, I forgot. In the 1970s I had a change of hairdo from very long straight hair to a chin-length curly perm. It was four days before he said "Have you done something different with your hair?"
grumppa is it possible that your DW knew about the trimmer malfunction and your DDs asked her about your beard and that's why it wasn't mentioned? 
When I was in my 50's, I bought a beautiful tweed jacket from a charity shop. When showed it to my husband his comment was " you are too old for irony".
Can you have the ironic sound of frying pan on head?
On a whim I decided to have almost 5 inches chopped of off my hair. when my DH got home he did not seem to notice and made no comment. I asked if he liked my new haircut and he looked and said oh yes you have had a trim, very nice.
I must admit some years ago my OH shaved off his small beard, and I didn't notice. Apparently he told them all at work, and every day they were asking "has she noticed yet?, they couldn't believe it" He had to tell me in the end, I felt embarrassed.
I am not good at observation generally, I'd be useless in a police identity line up, and as far as cars go, red green etc is my limit.
Yet often when watching tv I'll notice some small thing, like actresses earrings, eye make up etc, which he hasn't seen at all.
What's with all this clothes crap! Use them to keep warm! I hate clothes shopping ... hate bra's and discarded them years ago.... I'm clean, tidy and that is good enough for all in my family. I never had a woman's mag in the house since the day my daughter was born and now she also does not care about clothes ...she hasn't had a women's mag in her house either and now her daughter (5) doesn't give a damn about clothes and thankfully hates pink!!! Stop faffing about whether any man in your life likes what you wear...he will never care what you think and quite right too! My wardrobe is 3 ft wide and half empty! Too many books to read to worry about clothes.Have you all forgot about real feminism. Read 'The Beauty Myth' by Naomi Wolf all of you. Shock
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