J-Lo and Kate Moss Smooch!

OK, it's not what you think.

Jennifer Lopez and Kate Moss are simply kissing each other "hello" at the launch dinner for Topshop, the upscale British clothing boutique that officially crosses the pond to open a store in New York today.

Moss was Topshop founder Sir Philip Green's guest of honor at the dinner, which was held at Balthazar restaurant in New York City Wednesday night.

Several big names showed up, including Jennifer Hudson, Rosario Dawson, and J-Lo's hubby Marc Anthony.

Moss -- who sells her own line of designer clothes at Topshop -- wore one of her own designs to the dinner, while Lopez opfted for a form-fitting, dazzling white dress. (Photo: Getty Images)