Sparks recently shared with E! News the secret to her slim physique. "I'm going and I'm doing circuit training for 30 minutes, so I try to keep my heart rate up. I've taken up running a little more which I never used to do before."

"I've been drinking water like it's my job," she added. "And then just really watching what I eat."

Sounds like a no-nonsense plan to us, and clearly (just look at Jordin!) it's working.

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