Sweitt Concorkill is one of Chancellor Palpatine’s aides in Revenge of the Sith and is seen sitting with him in the Coruscant Opera.
The curious thing about Sweitt is that he wears the exact same outfit as Jar Jar Binks during his senate address in Attack of the Clones. Furthermore, there is another opera goer of the same race as Sweitt, who also wears this exact costume. This unnamed person stands at the bottom of the stairs leading up to the opera, on the right.
In general you can find many reused costumes in the opera scene, and spotting reused costumes and characters can be fun when it happens.