HEY! I THOUGHT PEOPLE SAID THAT ARWEN DIDN'T HAVE THAT EVENSTAR NECKLACE IN THE BOOKS, BUT SHE DOES! I just read it!

     "But the Queen Arwen said: 'A gift I will give you. For I am the daughter of Elrond. I shall not go with him now when he departs to the Havens; for mine is the choice of Lúthien, and as she so have I chosen, both the sweet and the bitter. But in my stead you shall go, Ring-bearer, when the time comes, and if you then desire it. If your hurts grieve you still and the memory of your burden is heavy, then you may pass into the West, until all your wounds and weariness are healed. But wear this now in memory of Elfstone and Evenstar with whom your life has been woven!'
     And she took a white gem like a star that lay upon her breast hanging upon a silver chain, and she set the chain about Frodo's neck. 'When the memory of the fear and the darkness troubles you,' she said, 'this will bring you aid.'"

Look, Elven, look!

Elvenjediofnarnia17

She does indeed have the necklace! She just doesn't give it to Aragorn like she does in the movies! She gives it to Frodo! And that's after the wedding!