Olivia Rodrigo celebrated a huge milestone in her life with a star-studded afterparty.The “Driver’s License” singer won three awards on Sunday at the 64th Grammy Awards, including the coveted Best New Artist award. To celebrate her achievement, she partied with none other than Paris Hilton.The former Disney Channel star joined the 41-year-old heiress in the DJ’s booth, which was set up in front of a screen that read, “Baby’s first Grammys.” The pair also ended up hitting the dance floor together while Hilton sang her 2006 single “Stars Are Blind” to Rodrigo.Olivia Rodrigo shines light on inclusion, brings sign language interpreter to GrammysKanye West & Olivia Rodrigo could make Grammy historyOlivia Rodrigo, Charli D’Amelio, and their BFFs get matching tattoosAfter their fun night out, Paris commented on a photo of Rodrigo holding her three Grammys, letting the 19-year-old know how proud she is of all she’s accomplished.