It's been almost two years since the bombshell Diane Sawyer interview where Bruce Jenner admitted he was transitioning to become a woman.

Now ABC has released the first teaser for the network's follow-up interview with Caitlyn Jenner on April 21, just three days before the release of her tell-all book The Secrets Of My Life.

'Do you ever have doubt you did the right thing?,' Diane asks in the clip.

First look: On Friday ABC released a 20-second teaser for Caitlyn Jenner's interview with Diane Sawyer, airing April 21

'Have I made mistakes? Certainly,' the 67-year-old former Olympian is seen telling the award-winning journalist.

The voice over promises that Caitlyn will discuss regrets, love and family in the new special that shares the title of her upcoming memoir.

Their first interview on April 24, 2015 reached 17.1 million viewers, but that was before Caitlyn had officially announced her transition.

Since the sit down, Caitlyn starred in two seasons of an E! reality show that was cancelled last year.

Grilled: Sawyer asks Jenner if she thinks she did the right thing in the new clip

Groundbreaking: They first sat down in 2015 and the interview reached over 17 million viewers

She still appears on Keeping Up With The Kardashians with her daughters Kendall and Kylie.

In a recent episode, Caitlyn is seen telling former step-daughter Khloe that she's upset nobody from the family calls her anymore.

She told Khloe: "I just really feel like over the last year and a half we certainly have grown apart. Day after day after month after month, nobody calls, nobody checks in.

Caitlyn continued: 'Just, "Hey, how are you doing?" You can't help but sit there and think, "Okay, is it because I transitioned? They don't like me anymore?" I want to know what I did wrong, what I didn't do wrong, what I did right, and move forward.'

Multiple Jenner-ations: Cait is seen with all six of her children plus her step kids in 2015

Relationships appear to still be strained from the I Am Cait star's series of revelations from her 'coming out' cover story in Vanity Fair where she claims Kris 'mistreated' her.

It is yet to be seen how far Caitlyn will go in The Secrets Of My Life, however, the books description promises candid talk about Caitlyn's life as a member of the Kardashian Klan.

There are rumors Caitlyn will accuse ex Kris of pushing Bruce into the closet and not allowing her to become her true self in the book, out April 25. A source close to Kris calls these rumors 'unfounded.'

Love?: The trailer promises that her love life will be discussed, she's been linked to model Andreja Pejic

Caitlyn has been linked to trans model Andreja Pejic after they walked the red carpet at Elton John's Oscars party in early 2017.

In another shot, Caitlyn is seen driving. It is not clear if her 2015 fatal car crash that killed one woman will be addressed during the special.

Jenner was cleared of any wrongdoing in the accident.

Accident: She was involved in an accident that killed one person in 2015, but was cleared of any wrongdoing

A new rumor claims that Caitlyn may have her eyes on a TV talk show.

'She desperately hopes it will be the success her ex’s wasn’t,' a source tells Celebrity Insider, referencing Kris Jenner's failed talk show Kris from 2014.

Cait and Kris wed in 1991 and divorced in 2014. During their 22 years together they had two children, Kylie and Kendall, and she helped give him a new career.