Singer Jordin Sparks is so determined to get engaged in 2013 she has started sending photos of rings she likes to boyfriend Jason Derulo.

The Battlefield hitmaker has been dating the Ridin' Solo star for over a year and she is hoping to celebrate her 24th birthday in December (13) as a fiancee.

Asked about the couple's engagement and wedding plans during an appearance on DJ Ryan Seacrest's radio show on Tuesday (16Apr13), Sparks said, "That's a question for that guy over there!" and pointed at DeRulo, who responded, "It'll happen when the time is right."

But he confessed his girlfriend has already started ring shopping: "Oh, trust me, she sends me pictures!"