Maybe you should provide more information than what you’ve posted:
Which movie version are you wanting a costume of ?
Are you looking to buy a completed costume from another RPFer?
Are you wanting recommendations on ready-to-wear costumes to purchase online?
Are you wanting to hire a seamstress to make a costume for you?
Are you going to make the costume yourself and you’re looking for patters, tips, and advice?
What research have you done on this costume?
Have you used the ‘Search’ feature on the RPF for other Threads about this costume?
What is your budget?