Jenner, casually dressed in blue skinny jeans, red sandals and a floaty patterned blouse, commented on her snap with hashtags "#TransIsBeautiful", "#LivingOurTruth" and "#JustTheBeginning".
Since undergoing her gender transition, Jenner has finally been able to throw out the boys clothes in her wardrobe.
She said: "To be able to wake up in the morning, be yourself, get dressed, get ready to go out, and just be like a normal person. That's a wonderful feeling to go through life.
"I've never been able to do that; it's always been confusion, it's always been, you know, I've got one side [with] boy clothes, the other side's women's clothes. It's like I cleaned the whole closet out - the boys stuff is gone, okay?"
Fans will get another sneak peek into Caitlyn's new life when her eight-part docu-series, I am Cait, airs on E! Channel in late July.
- nzherald.co.nz