Michael Wilkinson, the costume designer for Breaking Dawn: Part 1 and Breaking Dawn: Part 2, reveals in an Interview with MTV what a fiasco it was to get Robert Pattinson to wear a pair of shorts!

“It’s a challenge to put an Englishman in shorts,” Michael tells MTV . “They have an instant freakout! I think it has to do with their Public School Uniforms that they wear as kids.”
Yikes! We’re hoping Edward doesn’t leave Forks for a warm weather destination in Breaking Dawn 2. We’d hate for Rob to have another short freak out!
Source HollywoodLife