WATCH: Caitlyn Jenner Revealed: No Makeup, No Glam, Many Worries

The opening scene of the July 26 premiere episode of E!'s I Am Cait is revealed in a new preview of the eight-episode docu-series, and it's a far different glimpse of the transgender woman who graced the cover of Vanity Fair.

Jenner recorded herself on video, talking to the camera about how she's having trouble sleeping at 4:32 in the morning. Without a hint of embarrassment, the 65-year-old revealed her true face, sans makeup, to the world.

In the clip, Jenner revealed her inner turmoil: how she wants to be a good role model and do her part to help the transgender community.Wearing a robe, sitting in her bed, she said her mind was spinning:

"I feel bad that these -- especially young people -- are going through such a difficult time in their life. We don't want people dying over this. We don't want people murdered over this stuff. What a responsibility I have towards this community. Am I going to do everything right? Am I going to say the right things? Do I project the right image? My mind's just spinning with thoughts. I just hope I get it right. I hope I get it right."

I Am Cait premieres this Sunday at 8 p.m. EDT on E!

Watch the sneak peek from I Am Cait below.