Juniper Woods' stage outfit for when she was going to sing the Guitar's Serenade during the Gavinner's return concert is almost exactly the same as Lamiroir's, who originally sang the same song in Ace Attoreny: Apollo Justice. Weirdly enough, neither Apollo, Trucy nor Klavier make any mentions of the fact despite having met Lamiroir.

The artbook "The Art of Phoenix Wright: Ace Attorney - Dual Destinies" by Udon Entertainment expands upon this. In-universe, the similarities are purely coincidental, as Juniper just so happened to design the exact same costume that Lamiroir wore during the previous game. Out-of-universe, however, it was done to tie into the sub-plot about Juniper's crush on Apollo Justice, as it allowed for a cutscene where she gains "brownie points" with Justice, who is a fan of Lamiroir's music.