Chris Brown & Girlfriend Karrueche Tran Celebrate Amber Rose's 31st Birthday at Halloween Themed Party

Chris Brown keeps it cool with a hoodie while attending Amber Rose‘s costume themed birthday celebration on Monday (October 20) in Los Angeles.

The 25-year-old entertainer was seen wrapping his arms around his girlfriend Karrueche Tran, who rocked a bunny costume, while heading to the party.

PHOTOS: Check out the latest pics of Chris Brown

“Met some guy last night who was dressed as Chris Brown.. Cool costume bruh,” Karrueche wrote on Instagram.

Earlier in the night, Chris and Karrueche donned different outfits while hitting Teyana Taylor‘s VII listening party at Siren Studios.

In case you didn’t know, Amber celebrated her 31st birthday the next day on Tuesday (October 21). Happy Birthday Amber!