John Travolta honors late wife Kelly - while Paris Hilton celebrates her first Mother's Day

Paris Hilton and Kris Jenner hang out at Anastasia Beverly Hills Mother's Day Celebration

Paris Hilton & Kris Jenner Celebrate Mother's Day at Star-Studded Anastasia Beverly Hills Party

Rihanna, Paris Hilton, & More Stars Are Celebrating Their First Mother's Day This Year!