Katy Perry
Credit: Kevin Mazur/WireImage

Katy Perry may have changed into four different Jeremy Scott outfits for her halftime performance at the 2015 Super Bowl but her jewelry remained the same throughout.

The headlights shining from the singer’s earlobes were diamond studs by Lorraine Schwartz. Each earring featured a round diamond weighing approximately 9 carats that was surrounded by a carat's worth of smaller stones, adding up to a total of 20 carats.

“They showed up so well during her performance not only because of the size but we set the diamonds so they the lay really flat on the ear,” explains Schwartz who has bejeweled the star several times. “The earrings sparkled beautifully with all her outfit changes, they looked amazing around her face and really lit-up with those fireworks.”