Katy Perry and John Mayer engaged? The ring that started the rumor

Katy Perry and John Mayer engaged? The ring that started the rumor
Katy Perry poses for photographers upon arrival at the 2013 MTV Europe Music Awards, in Amsterdam, Netherlands, Sunday, Nov. 10, 2013. (Photo by Joel Ryan/Invision/AP)

Katy Perry must have known that tongues would start wagging when she showed up on the red carpet at the European MTV Awards in the Netherlands last night in a seafoam green dress...and what appeared to be a large diamond ring on her finger.

The singer, who has reportedly been close to becoming engaged to boyfriend John Mayer, didn't comment on the unusual (and distinctive) piece of jewelry -- but that didn't stop everyone else from weighing in. Almost immediately, rumors that the ring was more than just an accessory began to fly.

However, this isn't the first that that Perry has chosen that particular finger. Back in February, tabloids noticed that she was wearing a red, heart-shaped ring in the same place.

Sources close to the couple, though, say that the two are very serious about each other, and that it's just a matter of time before the musicians make it official.

Perry's album, "Prism," has become one of the hottest selling records of the year. At the EMAs last night, she took home the award for