Jewelry: Stick to studs or pearls. Never large hoops or anything dangling. A very small hoop or "cuff" earring is OK as well. One item of jewelry per each wrist. Never anything the clinks together and makes noise. It's distracting, and you can't type effectively with too many things on your wrist. Less is more here.
In summary, don't let your outfit overshadow your skills. Just because something might seem conservative to you, it might not be conservative to your boss, or your boss' boss. Dress for the job you want, not the job you have. Use your own judgement, and just because your peers are showing cleavage and wearing flip flops, doesn't mean you should too.
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