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When it comes to Caitlyn Jenner's new reality, there's a lot to get used to.

Yes, there's the fabulous closet that features plenty of new clothes. And sure, there's the hair and makeup routine that can't be missed every morning.

But even with the fresh new looks, there's one concern the Olympic gold medalist has: It's her voice.

"You know what concerns me and is probably going to drive me nuts? It's my voice," Caitlyn admitted in a bonus clip from Sunday's all-new episode of I Am Cait. "I really haven't disguised my voice that much."

Caitlyn Jenner

E! Entertainment

She added, "It sure helps with your appearance. It really changes people's perspective with the way you talk." 

Luckily, Caitlyn is not afraid to reach out to other members of the transgender community. As a result, she doesn't exactly feel alone with her worries or concerns.

After inviting model Geena Rocero into her home, Caitlyn begins to open up about her journey thus far.

"I have been isolated my entire life from this issue," Caitlyn explained while holding hands with the activist. "It's very hard for people to understand. I've lived it my whole life and I don't understand it."

Geena added, "We need to tell our stories for them to know we are just the same human being."

Watch their heartfelt exchange in full in the clip above.

New episodes of I Am Cait air Sunday nights at 8 p.m. only on E!