While in Europe on her world tour, Jennifer Lopez took a break to celebrate her sister Lynda's birthday at Buddha Bar in Paris.

The sexy 43-year-old Latina rocked an ultra-short dress showing off her sexy legs. Sitting right next to her ... her young and extremely lucky 24-year-old beau Casper Smart. Also partying with the songstress was longtime manager Benny Medina who took a seat next to his uber-famous client.

JLo certainly knows how to command attention whether on or off the stage!