Posted on Thu Nov 1, 2012 09:30 AM PDT
Leave it up to RiRi to change clothes in the middle of her own party!
Rihanna hosted a Halloween party at Greystone Manor in Hollywood last night, and the "Diamonds" singer walked the red carpet in a demure black dress before changing into a green veil and costume. Could she have been paying homage to her favorite past time?
Once inside, the Barbadian beauty partied with rumored on-again boyfriend Chris Brown, who was dressed as a Taliban soldier, and Basketball Wives star Evelyn Lozada.
Later in the night, Katy Perry's bestie was crowned the Queen of Halloween!
It must be nice to be the pop princess!
Do you like Rihanna's costume?
SEE THE GALLERY Rihanna Celebrates Halloween At Greystone Manor
X17 EXCLUSIVE - Rihanna And Chris Brown Have Secret Rendezvous At Recording Studio - Oct 26, 2012
Rihanna Supports Breast Cancer Awareness Month With Hot Pink Coat - Oct 25, 2012
EXCLUSIVE PHOTOS - Rihanna And Chris Brown Party Together Poolside In Beverly Hills - Oct 21, 2012
Rihanna Hits Up Hollywood For A Night Out On The Town - Oct 20, 2012
Rihanna Spends Another Long Night In The Studio - Oct 19, 2012