Video: Kris Jenner sheds tears over Bruce's transition

Kris Jenner hasn't had much to say publicly about estranged husband Bruce Jenner's transition to female, but in a new E! promo clip, she cries as she talks about the change in their family with Kim Kardashian.

Kim tries to explain that she can't imagine the pain Bruce has felt his entire life, but Kris says it's been tough on her, too.
“I have these memories of this life, and I feel sometimes like it didn’t exist."
The clip is from a new special, Keeping Up With the Kardashians: About Bruce, which will air in two parts, May 17-18.