Clockwise from left: Ciara's 22nd Birthday at Runway in NYC, The Velvet Room in Atlanta and with Missy Elliott at Nikki Beach Midtown.
Shareif Ziyadat/FilmMagic; Rick Diamond/WireImage; Ray Tamarra/Getty
10/30/2007 at 09:00 AM EDT
Ciara's party train kept right on rolling Monday night, as the R&B star celebrated her 22nd birthday at South Beach's Cameo nightclub. The bash – complete with a sparkler-topped chocolate cake and a bottle of Cristal – came on top of previous fetes in Washington, D.C., Atlanta and New York
(where she held two separate soirées). So what's with all the repeat performances?
"I missed my 21st birthday [because] I was on tour promoting my album," she told PEOPLE. "Since I didn't get to celebrate turning 21, I'm celebrating exiting
And she's not done yet. The singer – who broke up with singer Bow Wow last year and recently denied rumors of romance with 50 Cent
– jets to the Bahamas today for two more nights of revelry. "At first I said only five parties, but it somehow turned into seven!" she exclaimed.