Senior Photos

I was asked by a family member to take her senior pictures. I will admit, I was nervous about my ability to do this. As I've said before, I don't know ANY of the technical stuff about cameras and photography. I have to admit, I was THRILLED with the way they turned out...AND it helps to have a GORGEOUS subject matter!

Now for you photography junkies. What type of lens do you use for most of your photography? If you only had ONE, which one do you think is the most versitile? I have the stock lens my camera came with, but used a 55 - 200mm for some of these. I liked it. I am thinking about purchasing one myself, but not 100% sure that this is THE lens. I would like to continue doing this type of photography (maybe even "officially" after I figure out what I'm REALLY doing), but would also like something that is great for sporting events. Would love your input.