Originally Posted by MrDaniels
Face it: It is done more often than not in America.
That doesn't mean it looks good. The black of the tux tends to look washed out when worn during the day. Also, just because a lot of people make this mistake doesn't mean it is OK. A lot of grooms and groomsmen wear high vests with their tuxedos as well, which completely ruins the look that the tuxedo produces.
Originally Posted by stant62
Agree with the comments about no tuxedo. Looks like a day wedding and the (lounge) suit is perfectly appropriate, maybe a solid grey or morning coat would be more ideal - I think the problem here is the unbuttoned tie look, skinny tie (IMO glen plaid or houndstooth), and what appears to be a casual black leather belt... he's probably wearing square-toed shoes too or his Adidas slippers.
I can't stand the unbuttoned tie look. I see people do it all the time in NYC, even in the morning before the day has even really begun. Is it really that hard to leave the top button fasted with the tie pushed all the way up?