Karsh. Pablo Casals.
Not saying this one works, but bleating along about negative space etc is just enforcement of TPF's norms, not actual criticism.
Nah. If there are TFP norms, I somehow didn't get the memo.
I think the reality of shooting weddings and bridal portraits is that in 99% of the cases, the bride (and MotB) have certain expectations and those mostly revolve around "focus on the bride and make her look spectacular." Now, if the bride was saying "let's come up with some creative concepts that make me look pissed or alienated or especially tiny" then that's a damn fine shot--a great example of manipulating/composing the elements to send a subtle message or influence how people perceive the subject. But if the bride was looking for pictures where she looks radiant and beautiful and "this is the best day of my life!" kind of stuff, then a very different crop and light makes sense. Yes, it looks a lot like Yusuf Karsh. And Karsh's style (with lots of dark surrounds and in B&W) doesn't lend itself to bridal portraits much.
As to the OP, I like the second concept much better. I think the bride is likely to be happier with it. It's more of an environmental portrait and it's got some interesting stuff around her. She may still want you to crop it so she's 80% of the photo but I think you've got a good eye and found an interesting setting. Thanks for sharing the results.
As for the first photo, if you really wanted to run with that mood (and if the bride really was eager for something a bit edgy or with a different vibe to it...ie: the negative space, dark brick wall), then you have her put on a tattoo sleeve (or a couple of fake tattoos). Or surround her with leather clad "gang members". And if you weren't going to reshoot, a crop where she's less centered (ala Derrel's suggestion) would fit well with the vibe of the photo. Also, if she's just looking for a more conventional approach (i.e.: she looks beautiful), with dark hair I'd want to use a kicker of some sort so her head doesn't blend in to the dark surroundings.