Answer: Yes.
My cousin, Rebecca, got married this afternoon. I attended her wedding. I had my Dad take this pic of me and her together, so I could post it here in an effort to help answer the oft-asked question I see posted on this forum whenever someone growing their hair is looking for advice on how it should be worn at formal gatherings.
Folks, you can't get much more formal than a wedding. Yes, you're there to help celebrate someone else's very special day, but that doesn't mean you can't look nice and feel relaxed at the same time.
I say it shouldn't even be an issue, given that you have the right to have your hair however you like. I personally keep it down whenever I want, tie it whenever I want. I hardly get people on my case, but even if I did, they'd need serious reasons to make me tie it when I don't want to (tying it while eating is a reasonable hygienic reason, but if it's just cause you don't want my hair down, that's no good).
Sara Melissande ~
I always wear it down. I have never even tied it up for a job.
I have tied it up for extreme winds, other than that I also wear it loose anytime. Also at my job.
My boss once asked me if I could tie it back, I asked him if it was a request or a demand. It was a request so I said 'No'.

I completely, 100% agree with you here. Long loose hair can look great at formal gatherings. I just recently had my prom, and I went with my hair down, as you can see above.
I hosted more pics on photobucket:
http://s80.photobucket.com/albums/j175/malendras/

Nightfall - your hair looks totally 'sick' dude. It goes very nicely with a formal suit and i'm glad that you aren't afraid to let it down for formal occasions.
This is my curly hair from a few months back, at a dinner party, wedding ocasion. My hair isn't 'long' like yours, but you get the general idea from the photo. Yes, long hair CAN be worn down in formal contexts.
Niiiice!
Love the hair coming over on top.
You must of brushed it like that yeah?
Very shnazzy.
Ok i'm going to show my advanced age here but is this good
or bad?
'Sick' is an expression that usually means 'awesome' or 'jolly good' when used in the above context. Using the adverbs 'fully' or 'completely' just heightens the compliment.
Now was that a totally sick reply to your question or what?
I just wanted to tell you (although it probably means nothing to you-you being a hair God and myself, being a mere demigod like Heracles (if that) in comparison) that I have always thought that your hair was exceptional, but this picture just takes the proverbial cake.
In my eyes your hair is the 'ultimate' and if I can get mine anywhere as nice as yours (not to mention the length!) I will be a happy longhaired man.
Also, your beard has filled in nicely and really complements your appearance in my view.
Very inspirational.
Oh and yes, you can go to a wedding with your hair down and look formal (your picture is the proof of that!), although personally I tie mine back.

Hello Everyone,
A lot has to do with what parents have in mind. I remember, back in 1977, I hid to my mom, the fact I was going to the prom, since I did not want any of her advice about hair. I wore a suit, and my hair was, like shoulder-length.
Recently, I was told to look my best for an awards ceremony for my community service, and my efforts of integration as a person with Asperger's Syndrome.
After the ceremony, I put on some sunglasses just for this photo, to make my "Men in Black" effect.
Have nice day,
Georges in Montresl.
You and your cousin both look smashing in that pic, in my opinion! She is a drop-dead GORGEOUS bride, --- and there's nothing finer-looking than a longhaired guy standing next to a beautiful woman to complete the picture! And on top of that, had your hair been tied back the photo would have looked far duller!!!
- Ken in San Francisco
Hi Matt,
your "formal" look is absolutely great - it does radiate celebration and joy!
The same is true for Malendras and for all the others - thanks for posting your gallery! This thread should definitely convince all doubters, especially all the hesitant girlfriends of long-hairs-to-be...
wishing many more happy formal occasions to all of you...
Hans-Uwe
Your hair and beard look good and I totally agree with you that you can wear your hair down in formal situations. I attended a wedding a couple of months ago and also wore my hair down and was received warmly, and I even had to say a little speech. I think it does take a little more courage though, so I applaud you on that.
Yes