The 23-year-old was caught holding hands with the blonde clubgoer, while partying at the Playhouse nightclub in Hollywood.
Witnesses told the New York Daily News that Brown even gave a full bottle of Armand de Brignac champagne to the girl.
Sources added that Brown and his gang left the nightclub with a few girls in tow and piled into two vehicles.
Photos: Shah Rukh Khan, Deepika Padukone, Alia Bhatt at an awards show
Photos: Big B, Iulia Vantur at Himesh Reshammiya's album launch
Photos: Aamir Khan with 'Dangal' actresses at fashion show
Spotted: Twinkle Khanna, Shriya Saran at an event in Mumbai
Andrew Flintoff's birthday: 10 players who entered different sports