Amy Dowden has revealed that "no evidence of disease" was found during her latest health check.
The Welsh Strictly Come Dancing pro, 33, was diagnosed with stage three breast cancer last May.
She took to social media to announce the "words she's been dreaming of" on Friday afternoon.
She also hinted at a return to the hit BBC show which made her name, adding: "Dance floor I'm coming for you."
Caerphilly-born Amy, who joined Strictly in 2017, told fans on Instagram: "No evidence of disease - words I've dreamed of."
Describing the news from doctors as her "biggest accomplishment yet", she added: "I won't be getting the all clear for five years - especially with a hormone fed cancer - but it was all worth it."
The star, who had a mastectomy in June 2023, said that the gruelling months of treatment had "certainly took its toll" on her body "both physically and mentally".
"I will still need a monthly injection for five years and regular check ups," Amy added.
"I have so much to strive and live for and I'm so grateful for another chance at life, something I know not all get.
"I certainly see life differently and my life has changed forever."
She went on to thank all those who had wished her well since her diagnosis.
"So grateful for all the care I received and continue to have," she posted on her Instagram account.
"To my husband, family and friends who supported me unconditionally and to you guys (her fans) - thank you."
She also pledged to continue to raise awareness of the disease in order to help others suffering with it.
In the comments section under Amy's post, her father Richard said: "How do I begin to express my joy of hearing this?
"You have faced this with great courage - my pride is beyond words."
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