I love this! I can't believe I've missed out on special animations that play for certain combos of characters in Mario & Sonic at the Rio games. As I said, these games are more fun to watch than play XD
Ignoring photographs and scans of the subject, this particular render of Rosalina holding her storybook has only ever been released on the Internet in the form of a promo graphic for a trading card. (The actual card has an iridescent sheen around her.)