EXCLUSIVE: Sienna Miller is headed to Berlin this week to start work on Business Trip. She’s joining Vince Vaughn, Tom Wilkinson and June Diane Raphael who are starring in the Ken Scott-directed comedy from New Regency. Steve Conrad wrote the script about a struggling Midwestern businessman (Vaughn) who takes his team on an eventful cross-country journey in a bid to win a contract. Wilkinson is playing one of Vaughn’s travel companions and Miller is joining as a businesswoman. Miller is next up in November release A Case Of You and plays Nancy Schultz in Bennett Miller’s Foxcatcher. She’s repped by WME and the UK’s United Agents.