Keri Hilson performed at Hot 107.9’s Birthday Bash last weekend.

Miss Keri Baby (and her crotch) performed a medley of songs from her current album, including “Knock You Down” “The Way You Love Me” and “Pretty Girl Rock”…

Keri’s crotch was doin’ the dayum thang!

Keri even brought her lil sister and a few friends onstage to “pretty girl rock” along with her.

More PHOTOS + VIDEO below:

VIDEO: Keri Hilson “Pretty Girl Rock” Birthday Bash 2011

I know y’all thought I was exaggerating last night…. but errr umm….

SeeWhutIMean?? 😕

They say sex sells but I ain’t buying it. What the hell happened to “clean wholesome” Keri? Where did this hooker chick come from? Somebody put out an APB….