She said she will need brain surgery to have the tumour removed.
Martin King and his wife Jenny have revealed some devastating news.
The photographer confirmed her brain tumour has returned, but thankfully it is benign.
Jenny posted an update on her Instagram account yesterday evening.
"Hello everyone. So, I have some news ... not the best news but not the worst news either."
"Some of you may already know that I had a brain tumour removed successfully in 2011 by an incredible person, Professor Ciarán Bolger at Beaumont Hospital," she explained.
"Unfortunately, after a recent brain scan, it seems there is new activity.
"This means there is some 'swollen tissue' which is probably the tumour growing back."
"Good news is, it's not malignant and Professor Bolger will need to carry out some more brain surgery to remove it."
Jenny said she will need to take six weeks off after the surgery.
"But after that, I'll be back doing what I love."
Jenny explained that the surgery will take place in early February.
"I can't thank you all enough. Thank you for always believing in me and for all your love and support along the way."
She also praised her team at the studio, her husband Martin and her kids.
"I've decided to tell you all about this myself before it gets out and you're reading it second hand," she said.
"I am going to get through this and I'll be back to the same Jenny you all know in a matter of weeks."
We're wishing Jenny a speedy recovery.
