Wiz Khalifa baby SebastianHappy Father's Day! Some 70 million guys will celebrate being proud papas this Sunday. But is there any Father's Day quite like the FIRST Father's Day?

For thousands of fathers, this will be the big one ... and that includes some of Hollywood's sexiest men, made that much sexier by how proud they are of their new babies they've welcomed since June 2012!

From Chris Pratt to Nick Lachey, here are some of the sweetest moments from our newest celebrity dads.

Which of these dads is your favorite? Do you know a new dad celebrating his first Father's Day?

 

Image via Instagram