Bruce Jenner's 'Keeping Up with the Kardashians' special is ''very compelling''.

The 65-year-old former Olympian's decision to transition to a woman, and the reactions of his family, is documented in a two-part episode of the reality show entitled 'About Bruce' and producer Ryan Seacrest found the footage ''extremely emotional''.

He told Us Weekly magazine: ''I watched it back, and I thought it was very emotional and very compelling.

''We've got a two-part special where Bruce talks to his family about everything, which is extremely emotional and very, very raw.''

However, the 40-year-old presenter declined to give detail on how Bruce's ex-wife Kris, stepchildren and daughters reacted to the news.

He said only: ''I do know they have a very powerful couple hours of TV coming up.''

Bruce's stepdaughter Kim Kardashian West recently said she hopes the special episodes will be ''informative'' for other families going through similar situations.

She said: ''We all love and support him no matter what, but it is a hard adjustment. And I think it's really informative for other families who are going through this.

''I think people will learn a lot and understand it's OK to have every emotion, and at the end of the day, I don't know if you'd say 'normal family' but we're a family that goes through so much.

''We just support each other through everything, but there is a learning curve, there is an adjustment period. And, at this moment when we were filming, it was a period of time when it was first starting to happen and it was really raw and real for us, so some family members have a harder time and you just see our journey. We just filmed it to help other families going through what we're going through.''