A tearful Lucy Hale said she was heartbroken after her comedy-drama series Katy Keene was cancelled after one season.

The actress, 31, played an aspiring New York City fashion designer in the show, which was a spin-off from teen drama Riverdale.

Network The CW announced it would not be coming back for a second season amid reports of poor viewing figures.

A devastated Hale, best known for starring in TV mystery thriller Pretty Little Liars, shared a video to Instagram in response to the news, saying she was a ā€œblubbering messā€.

The weeping actress said: ā€œI have struggled all day with what I wanted to say about this or if I shouldnā€™t say anything orā€¦ nothing felt right, I didnā€™t just want to post a picture or a caption because nothing would do justice to how I feel about Katy Keene or how I feel about the people involved with it.

ā€œTruly, one of the highlights of my life. Just such aĀ  joy from top to bottom.ā€

Explaining the show had not been picked up for a second season, Hale said she had experienced similar disappointments during her career but ā€œthis is a bad oneā€.

She said: ā€œItā€™s happened a few times to me and each time itā€™s just heartbreaking. Itā€™s a job that has broken my heart numerous times. This is a bad one, itā€™ll take some time to get over but thatā€™s not why Iā€™m making this video.

ā€œMainly I wanted to make this video so you could hear it straight from me so nothing is misconstrued. Long story short I am just grateful, Iā€™m grateful for the role of a lifetime, what a blast.ā€

She thanked show co-creators Roberto Aguirre-Sacasa and Michael Grassi,
the cast and her fans before admitting she was ā€œconfusedā€ as to why Katy Keene had been cancelled.

She said: ā€œIā€™m so proud of what we made. I do believe itā€™s timeless. I think sometimes things just donā€™t work out and maybe it was just not the right time for it. I donā€™t know, Iā€™m a little confused.ā€

Hale, who earlier this year starred in horror film Fantasy Island, added: ā€œI just wanted you all to hear that the showā€™s not coming back and that sucks but Iā€™ll hold my head high. And who knows what Iā€™ll do next.ā€