Rihanna spent Halloween in Barbados this year and dressed up as a gangster.

The 25-year-old uploaded an Instagram photo in which she threw up a West Coast hand gesture, wore a plaid button down shirt, large gold hoop earrings and baggy pants that showed off Tommy Hilfiger boxers. Her hair was half up, half down and her makeup gave her skin a blue tone.

She captioned the shot, "My chola name was #ShyGirl."

PHOTOS: Rihanna Bikini Body in the Dominican Republic

The Diamonds singer also uploaded a collage where she and eight friends flaunted their matching-themed costumes. Each friend dressed in similar attire and had scary face paintings.

"ARLETA ZOMBIE CHOLA PACK!!@yusefhairnyc @jennnrosales @mforde11 @loreleicakes @badgalriri @evan_erogers @gomillionandleupold x 2 @sonitalex #happyhalloween #MUGSHOTZ by @gomillionandleupold," she captioned it.

PHOTOS: Rihanna Flaunts Her Stuff in Greece

Her celebration also included a creative Halloween treat. Rihanna had a custom cake made for her, which consisted of a witch and a pot of stew. Next to the pot stood the witch's recipe book.

"Just got Heauxm to this EPIC phucking cake from my Bajan chef!! Thank you Esther!! Ya too sweet!! #BajanHalloween #Barbados," Rihanna captioned the shot.

Scroll through our gallery to see photos of Rihanna on Halloween.