Hollywood's Winter Birthday Babies!

Brrr, it's cold outside, but these adorable birthday babes – Mason! Violet! Zahara! – will melt your heart

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LOUIS BULLOCK

Sandra Bullock's 1-year-old "Cajun cookie," whom she adopted last January, is the "crown prince" of her family. "He's just perfect, I can't even describe him any other way," she told PEOPLE.