Nicky Hilton and mom Kathy arrived to Paris Hilton and Carter Reum's wedding carnival

Demi Lovato is a sight to see in neon green while mingling at Paris Hilton's wedding carnival

Paris Hilton welcomes Kathy and Nicky among fleet of celebs including Demi Lovato to her carnival

Paris Hilton and husband Carter Reum SHUTDOWN Santa Monica Pier for wedding carnival