What not to wear for women when presenting:
Dangly pendants or necklaces.
Bangles which rattle when your hand moves.
Ear rings which swing as your head moves.
Any clothing which will distract from your professionalism.
High heeled shoes which cause you to slump your stance to one side.
Any clothing which might be compromised when you stand in front of a projector.
Long hair worn down which might swing about if you turn your head a lot.
Anything which distracts them from listening to you.
Always practice by presenting in front of a friendly colleague and ask for their feedback.