Top: the only official artwork of Silver Luigi that has been released by Nintendo as an image file in a press kit. As you can see, Silver Luigi is largely obscured by Gold Mario. No standalone image of Silver Luigi was released.
Bottom: However, Silver Luigi appears unobscured in a single piece of artwork; seen on the inside of the New Super Mario Bros. 2 box. A high-resolution photograph of it was provided to me by twitter.com user “Nintendle”. This image is currently the most high-quality image of Silver Luigi available on the Internet. Main Blog | Twitter | Patreon | Store | Source 1, Source 2
Only Seven Acres of Rose of Pollux's Musings & Daydreams 
