(Photo: Twitpic)

Apparently we need to follow the American Idol workout plan, stat!

While Jennifer Hudson is getting shine for her new tiny frame, another Idol alum is making headlines for a major recent slim down.

If you’ve got it, flaunt it! On Sunday, Jordin Sparks did just that when she tweeted a mirror picture of herself as she modeled a polka-dot bikini. "I don't know why but my bathing suit reminds me of fruity pebbles. :)" she wrote.

Sparks insists she doesn’t diet, and attributed her weight loss to simply getting more active. "Something just clicked with me, and instead of sitting around talking about it, I said, 'I'm going to go hike that mountain!' And it continued.  I've been hiking, and I've done a couple of runs," she told Us Weekly last month. "I also do Zumba. It's so much fun!"