Disney's live-action adaptation of **Lady and the Tramp** is building its cast.<br />Comicbook.com reports Thomas Mann has signed on to play Jim Dear, the human owner of Lady.<br />Mann will play opposite Kiersey Clemons, who is taking on the role of Darling, Jim's wife.<br />Most of the cast will be voicing CGI animals.<br />**Thor: Ragnarok** star Tessa Thompson will lend her voice to Lady.<br />**The Leftovers** alum Justin Theroux is set to voice Tramp. <br />
