Abigail Breslin celebrated her 12th birthday like any fifth grader ... at pap central, the Ivy. Drinks to that!
Also in L.A. -- exes Melanie Griffith and Don Johnson, President Palmer hocking auto insurance off the clock and former TV star David Faustino, randomly running with his dog outside Il Sole.
In NY -- J. Lo and Marc Anthony hit up the Waverly, where Fergie and her hottie fiance also ate, Orlando Bloom said nada about possibly hooking up with Jen Aniston and Christina Ricci warned paps of oncoming traffic.