Katy Perry shows off John Mayer engagement ring at MTV EMA

London: Katy Perry is reportedly ready to walk down the aisle again, as she was spotted wearing a wedding ring on her engagement finger on the MTV EMA red carpet.

The `Roar` hitmaker, who was without her lover John Mayer, looked happy wearing the bling, Metro.co.uk reported. However, a few hours later the ring was mysteriously gone when the 29-year-old singer partied with the Brit brigade backstage and swapped outfits in the Patron Tequila backstage bash. Perry had earlier said that she is dating her crush, as she had a crush on Mayer for a long time and they fit great together.