My husband and I have been going through the same thing since our 14-year old started high school this year. I agree with the last comment. Be strong, kind, consistent, and set "boundries" with consequences. Both good and bad consequences. I say that even though I made every mistake in the book. My daughter has been seeing a psychologist every two weeks. She actually looks forward to going now. She gets to talk and talk and talk and has someone to listen that isn't mom, or dad, or sister, or friend. Of course, we feel very comfortable with our psychologist. I thought I was in for real trouble several months ago, but luckily I can say, she's coming out of this "attitude" of hers a much more mature, responsible teenager (now, ask me next month). Ha Ha. Oh, I should say, back in September, she started really getting out of hand. This wasn't like her. She has always been very nice, kind, but then she started High School, and BAM!! what happened. Anyway, we thought we should start family counselling that's how we started going to the psychologist. I really thought I was going to loose my mind, my job, shewwww...BUT...it IS getting better--much better!
Hope that helps.
This sort of behavior, provided it's not pattern over a long period of time, is not unusual for a teenager. The best approach is to close loopholes as best you can, be clear about the rules and what will happen if they are followed/not followed. You want to design the ground rules, rewards/consequences in such a manner that it becomes in your daughter's best interest to follow your expectations (even when she doesn't like them). You are clear;y being vigilant - keep it up, so your daughter does not think she can pull the wool over your eyes, so to speak.