Caitlyn Jenner's Mother, Esther, Reacts to Transition in New Promo

"Mom has that," Kim Kardashian tells Caitlyn.

In the new 30-second spot on E! that went live Monday, Esther Jenner, 88, says, "My first feeling was, 'I lost my son.' Then I thought, 'You know what? I'm gaining!'"

The clip also shows Caitlyn Jenner, 65, inspiring others and talking to children, saying, "We are all beautiful!"

"I Am Cait" premieres July 26 on E!