Beyonce, Lady Gaga, Selena Gomez and Ed Sheeran auction Grammy Award mementos

But by far the most star-studded piece in the auction is the green room book, which includes signatures from more than 70 stars, including popstars Selena Gomez, Taylor Swift, Rihanna, Lady Gaga, Beyonce and Ed Sheeran, as well as plenty of other …