The beauty wore a particularly low-cut top while out with her lucky fella TONY ROMO, giving him and fellow clubbers at Key Club a real treat.
She's been forced to up her game in the busty stakes now that her pregnant sister Ashlee is catching up with her.
Ashlee has been showing off her new bumper cleavage in recent weeks but Jessica seems to have pulled out the stops to ensure she remains top of the busty league.
7 - Audrina Patridge
2 - Tyra Banks