Hot Summer Party Nights!

J. Lo gets low! Gerard sings karaoke! Paris pops bubbly! See how the stars spend their hot summer nights

BETHENNY FRANKEL

Destination? Margaritaville! Frankel and hubby Jason Hoppy leave their newborn daughter Bryn at home to celebrate the reality star’s "Skinnygirl Margarita" at New York's Montauk Country Club in July.