It's Father's Day, and what better way to tell your dad I love you, than to tweet it on Twitter. From Justin Bieber to Snooki, our favorite celebrities are celebrating Dad's day all around the world, but they've all met up in one place to share their Father's Day wishes and that place is Twitter.

Snooki Justin Bieber Lucy Hale

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Here's what they had to say:

Justin Bieber -- @justinbieber: "happy father's day "

Lucy Hale -- @lucyhale: "I love you daddy "

President Obama -- @BarackObama: "President Obama on being a dad: “My hardest but always my most rewarding job.”

Snooki -- @snooki: "Happy Father's Day! Especially to my daddy and to my daddy to be!

Kristin Cavallari -- @KristenCav: "Happy Father's Day to all the fathers out there :)"

Sofia Vergara -- @SofiaVergara: "Happy Fathers Day!!!! "

Jonas Brothers -- @JonasBrothers: "http://twitter.com/#!/JonasBrothers"

Happy Father's Day!!

Photos courtesy of Fame/Flynet