Alexander Skarsgard's 'Diary of a Teenage Girl' Co-Star Scared Her Sister & She Shattered Her Foot

Alexander Skarsgard looks handsome for photos at The Diary Of A Teenage Girl premiere during the 2015 Sundance Film Festival on Saturday afternoon (January 24) in Park City, Utah.

The 38-year-old star was joined by his co-stars Kristen Wiig and Bel Powley along with director Marielle Heller for the red carpet event.

PHOTOS: Check out the latest pics of Alexander Skarsgard

The day before, Alexander made an appearance at McDonald’s McCafe Presents The Village at The Lift.

During the festival, the cast stopped by Variety‘s lounge and Bel revealed that a diary she used to keep led to her sister being terribly injured.

“I had a diary — my sister stole it and obviously was running around the house with it and I really didn’t want her to read it,” she told the mag. “I chased her so far to the top of the stairs, she got so scared she jumped down the hall stairs and she shattered her heel and her whole foot.”

Watch the interview below!

FYI: Bel is wearing Burberry.