I have 7 months until the wedding and I want to lose about 25lbs. I don't have to worry about fitting in my dress because it is very flowy and can easily accommodate weight fluctuations but I feel and look best at about 120lbs and I'm at 145 now. I want to tone my arms a bit but otherwise just lose enough to look and feel more comfortable. What's the best plan to do this? I've never done a consistent die or exercise regime before and am not sure where to start.