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Caitlyn Jenner is living her best life.

That much is evident in the newly released trailer for I Am Cait, which debuted exclusively on E! News earlier tonight. The first footage showed Caitlyn and her friends clinking champagne glasses in a toast "to Caitlyn." Her mom, Esther Jenner, was among those celebrating the 65-year-old's many achievements.

Upon learning that Caitlyn is transgender, Esther, 88, recalled to the Olympian, "My first feeling was, 'I lost my son.' Then I thought, 'You know what? I'm gaining.'"

(Last month, Caitlyn Jenner chose to identify publicly as a woman and E! News will refer to her using female pronouns. In stories published before this date, she was referred to as Bruce Jenner and male pronouns were used.)

Another scene showed Caitlyn meeting with transgender youth. "Hang out with the people that love you and respect you," she advised. After they gave her a group hug, a proud Caitlyn returned the love, saying, "We're all beautiful!"

Not every moment was a happy one, of course. Tears streamed down Caitlyn's face while discussing her children, saying, "I want them to be proud of their daddy." And how could they not be? Caitlyn herself promised that there are "no more secrets" to be revealed. And now, with nothing left to hide, she finally feels "free."

With that freedom comes responsibility, to paraphrase. As Caitlyn explained in the first article from her WhoSay series "The Real Me," published today, sharing her story—and hearing other people's stories—has been "an eye-opening experience."

"The response to my new journey has been overwhelmingly positive," the E! star wrote, "and I'm eternally grateful for all of your sweet messages, letters and gifts."

Until recently, Caitlyn confessed that she had "totally isolated" herself from the transgender community, adding, "I have a lot of catching up to do!"

"I feel such a responsibility to this courageous group to try to get it right and tell all sides of the story. To me, that's always the biggest question: am I doing it right?" she said. "...I have so much to discover, and hope you'll join me on this adventure."

I Am Cait premieres July 26 at 8 p.m. on E!