Caitlyn Jenner opened up to fans on Monday in a blog post where she answered questions about her struggles and life as a transgender woman.

A fan submitted a question asking if there was a "tipping point" that made Jenner decide to go public with her gender reassignment after living as a man for 65 years.

"I firmly believe that there are intensity levels of being trans. For example, a boy at a young age -- 4 or 5-years-old -- might refuse to wear guy clothes and will only wear dresses," Jenner wrote.

She said the refusal isn't a "one-time thing" or "just dress-up play." A transgender child will struggle every day believing, "I'm a girl."

"I had all of the issues, but I was growing up in a very different time and I had no information," she explained. "Meanwhile, I had all of my diversions -- sports...this...that...married...family, but after 65 years, here I was right back with the same problems that I had when I was 10 years old and I had to finally do something about that."

Fans will be able to get a closer look into Jenner's life as a full-time woman when upcoming docu-series "I Am Cait" debuts July 26. E! has released a teaser clip, offering a sneak peek into her life.

In the clip, Jenner is playing tennis and says, "Now I know why girls need a sports bra!" She meets with school teachers to help educate people about the transgender community. She also shares a conversation with her mother, Esther Jenner, 89.

And, of course, she's been having a ball in the glam department, especially once she realizes that she's the new "authority on hair and makeup" in the family.

There are humorous moments, like when Jenner discovers she has the same outfit as Kris Jenner.

"Mom has that," Kim Kardashian tells Jenner as the former Olympian shows off a sleek black dress with gold-toned embellishments.

The look on Jenner's face is priceless and seems to say, "Well, that figures."

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