I reapplied this year and used some of the same letters of recommendation (I mean they can't expect you to have all new letters, it was difficult enough the first time). But I was also told that if you are still in touch with those people that wrote you letters before, then it is a good idea to get them to write you letters again with updated information. This shows that you have maintained these relationships and that the information in the letters is more current. I had most of the people who wrote me letters of recommendation rewrite their letters, provided that I was still on good terms with them and that they had a current resume and personal statement to look over. Hope that helps and Good Luck!
