R&B couple Jordin Sparks and Jason DeRulo (neckbrace and all) stepped out on the red carpet at Muhammad Ali’s Celebrity Fight Night XIII in Phoenix, Arizona yesterday evening. Yes, that’s a giant rock on Jordin’s ring finger but no they’re not engaged — apparently, it’s a purity ring. They might just be the most innocent couple in Hollywood! LOL Check out more pics after the jump!

Wendy L.

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