Hun firstly age is of no consequence, if you have unfulfilled desires then be brave to explore them as you may open up a whole new window to your life. I would moderate your concerns and put yourself out there as i am sure you will attract the right partner. Once you have experienced same sex...
Buy what makes you sexy hun. Most shops will have a range that you can browse. If you are looking to go out in it i would look for the understated but sexy look first, for the bedroom go wild hun X