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.