I'm a very observant person and I think I would be confused until I figured out all the pieces and put it together that you went and got hair extensions. And I'd probably keep quiet until I figured it out because I have to go through a process of elimination, in my head, as to what happened to your hair, lol. But overall, I probably would even care. Just be confused for a little bit.
As long as they look natural and she isn't obviously fake. Personally as long as her personality is cool and consistent then I don't care about what she does with her hair. My only stipulation is that she has to take care of it. How a person takes care of them self physically can say a lot about them.
Think about it like this- would you want a guy who looked like he was well-hung, looking like he was smuggling two squirrels chasing each other one day, and the next, ya mite havta get a magnifying glass (or the Hubble Telescope) and a pair of tweezers to find his winky...
Some guys might make fun of you but if it looks good and looks like it's real then they don't mind. Just don't buy that shiny looking kind that looks plastic because then it's a dead giveaway that you have a weave.