Need Dora The Explorere Adult Costume For B-Day Party

I am looking for a Dora the Explorer adult sized costume I can rent for my child`s 3rd birthday party. We have seen the Dora character at several places over the past few months.....the zoo, park, etc. The problem with that is we need the same Dora costume we have seen at these events. Does anyone know where I can rent a costume like this? I have been looking on the web, but I haven`t seen an adult costume like the one we have seen locally. I am in Jackson, MS. Thank you!!