Caitlyn Jenner's E! show documenting her life-changing transition has been cancelled. Photo:Getty

Caitlyn Jenner's E! show documenting her life-changing transition has been cancelled.

The broadcaster has decided to pull the plug on docuseries I Am Cait after two seasons.

Following the decision made on Tuesday, Caitlyn took to Twitter to say she's ready for the "next adventure" and thanked her friends for their support on the series.

"After 2 amazing seasons of #IAmCait, it's time for the next adventure," she wrote. "Thank you E! & thank you to the best girlfriends I could ask for!

While an E! spokesperson said: "We are incredibly proud of the two seasons of I Am Cait, a groundbreaking docu-series that sparked an important and unprecedented global conversation about transgender people, their struggles and triumphs

"Caitlyn and E! have mutually decided not to move forward with another season at this time. She will always remain a part of the E! family, and we look forward to continue following her journey as she appears on Keeping Up with the Kardashians."

The move, which comes after weeks of rumours, will come as little surprise after ratings for the show dipped to just 860,000 viewers for the second series finale.

2.73million viewers tuned in for the season premiere last year.