Katie Thurston shared an emotional message for her fiance, Jeff Arcuri, as he postponed his international comedy shows amid her cancer battle

“The Bachelorette” alum Katie Thurston has breast cancer. The reality star, 34, announced her diagnosis in a message to her Instagram followers on Saturday. “Life update: I have breast cancer,” she wrote, alongside two photos of herself taken by her fiancé, comedian Jeff Arcuri.

Katie Thurston recently shared an Instagram post on her battle with breast cancer. On February 15, she updated her fans and followers about her life.

The Bachelorette’s Katie Thurston is celebrating the small victories following her breast cancer diagnosis. “Finished biopsy. Went much better this time,” Thurston, 34, wrote via her Instagram Story on Wednesday,

I experienced a range of emotions over the past two weeks. Despair. Anger. Sadness. Denial. And then strength,” Thurston said of her diagnosis.

Katie Thurston, who starred on the 17th season of "The Bachelorette," revealed she has been diagnosed with breast cancer. The television personality made the announcement in a lengthy Instagram post on Saturday, detailing her battle thus far.

The Bachelorette alumna Katie Thurston took to Instagram today to share that she has been diagnosed with breast cancer.

Former Bachelorette Katie Thurston has revealed that she has been diagnosed with breast cancer. She shared the news on Instagram on February 15 in a lengthy statement and answered questions about the diagnosis in her Instagram stories.

Former “Bachelorette” star Katie Thurston announced Saturday she’s been diagnosed with breast cancer. The 34-year-old, season 17 alum shared the “life update,” saying she learned of her diagnosis earlier this month but was still waiting to find out what stage her cancer is at.

On one of her Instagram Stories, also posted on Saturday, Thurston said she is “waiting on learning what stage” she’s in and is planning to get another biopsy to find out more information. She also shared that there is no history of breast cancer in her family.

Paul Archuleta/Getty Images Katie Thurston is feeling optimistic after the latest update in her breast cancer journey. "Good news! My cancer hasn't metastasize[d]," the former Bachelorette, 34, shared via her Instagram Story on Friday,