Stars' Personal Dad Pics

From Nicole's shot with Lionel to Usher's proud papa pics, see how stars honor fatherhood on Twitter

USHER

"This is swag!!! Dad Swag!! LOL," Tweeted the singer, who shared this upbeat pic while spending the day with sons Usher, 4, and Naviyd, 3. "We're havin' the time of our life!!"