PHOTOS: On Halloween night, Pop princess Rihanna was the guest of honor at the West Hollywood Halloween Carnival, where she was crowned queen and feted by White Party promoter Jeffrey Sanker. RiRi got a special treat that night: Her mother, Monica Braithwaite, flew into town for the 500,000-strong celebration.

Photos: Phil Lobel/Lobeline Communications

Rihanna with mom Monica Braithwaite

Rihanna gives Jeffrey Sanker a peck on the cheek