Kingston Rossdale: Rockin' at 3!

Happy Birthday! Take a look back at Gwen and Gavin's little rock star's transformation from tiny tot to super-cool kid. By Kate Hogan

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Kingston jumps for joy as Gwen blows up balloons for her little one and his pals on Feb. 28. The No Doubt singer is known to dress Kingston in stylish threads, but what does she really love to see him wearing? Diapers! "I think that's when [my boys] look their best," says the proud mom.