The Girl On The Train Premiere
The Girl On The Train Premiere Getty Images

The world premiere of "The Girl On The Train" took place in London's Leicester Square, Tuesday, Sept. 20, with A-list celebrities hitting the red carpet.

The movie's star Emily Blunt, who gave birth just two short months ago, looked absolutely ravishing in a multi-colored printed Alexander MacQueen full-length body-con dress.

Russian dancer Katya Jones was a standout in a racy ensemble from Canadian design house L’Autre Couture by Luko Marion. The outfit featured black leather short shorts, a tweed halter crop top and matching floor-length tweed skirt. She accessorized with thigh-high black leather boots.