From Nicole's shot with Lionel to Usher's proud papa pics, see how stars honor fatherhood on Twitter
Credit: Courtesy Joey McIntyre
Updated: Tuesday Jun 05, 2012 | 06:00 AM EDT
By: Cara Lynn Shultz
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He's hangin' tough – even with barrettes in his hair! "Did I tweet this yet?" the New Kid on the Block asked about this shot with daughter Kira Katherine, who turned 1 on May 31.
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