*One week after celebrating her 30th birthday, Kim Kardashian threw some birthday love toward her homegirl Ciara.

Kim K helped the singer turn the big 2-5 at New York’s Greenhouse, reports People.com. Kardashian emceed the surprise party and even sang “Happy Birthday” to her singer pal while Chris Brown deejayed.

The girlfriends danced all night and partied until 3 a.m.