"40 years ago, my therapist asked me what my fantasy is," the former Olympian wrote on Instagram. "I told her walking on the beach being my authentic self and..."
The video speaks for itself – showing the delighted and carefree I Am Cait star strutting along the sand.
Two years ago, Caitlyn sat down with longtime journalist Diane Sawyer in April 2015 and came out as transgender in a special sit-down interview.
In her memoir, The Secrets of My Life, which was released earlier this year, the reality star says that she underwent gender reassignment surgery in January 2017.
Last October, Jenner legally changed her name to Caitlyn Marie (she previously went by Bruce) and her gender to female.
“The surgery was a success, and I feel not only wonderful but liberated,” she writes in the memoir, calling the decision to undergo the surgery “complex.”
“I am telling you because I believe in candor,” she says. “So all of you can stop staring. You want to know, so now you know. Which is why this is the first time, and the last time, I will ever speak of it.”