When you are looking for a costume to wear on Halloween or for any other occasion, the best places to go look for them is through departments stores and novelty shops. But what if you are looking for an authentic Halloween costume?  Going to these places will not help you.  If you are looking for authentic costumes, go and look for them online.  A lot of people have done online shopping for Halloween costumes and they are very satisfied with what they have found. I, for one, have found an authentic Megatron Transformers costume and the place that I looked for is the Internet.  Now, I’m very much ready and very excited to celebrate Halloween this weekend all dressed up like Megatron.