Story highlights Gomez shared the news on Instragram

She revealed her Lupus diagnosis in 2015

(CNN) Selena Gomez revealed on Thursday that she received a kidney transplant from her BFF.

The singer posted a photo on Instagram that shows her and fellow actress Francia Raisa holding hands across their hospital beds.

"I'm very aware some of my fans had noticed I was laying low for part of the summer and questioning why I wasn't promoting my new music, which I was extremely proud of," Gomez wrote in the caption." "So I found out I needed to get a kidney transplant due to my Lupus and was recovering."

Gomez revealed her Lupus diagnosis in 2015 and last year took some time off as she struggled with the disease as well as anxiety and depression.

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