Downton Abbey Newcomer Tuppence Middleton on Playing a Beloved Character's Love Interest instyle.com

As one of just a handful of new faces in the Downton Abbey movie, Tuppence Middleton is stepping into a daunting world — one that's adored by millions of people around the world and that helped the film make a whopping $31 million debut at the box office on its opening weekend.

If she feels any pressure about introducing a whole new character — one who happens to be the love interest of the beloved Branson (Allen Leech) — to die-hard Downton fans, it doesn't show. Even over the phone, the 32-year-old radiates a glowing self-assurance, despite the long day of press she had prior to our conversation.