Selena Gomez took to social media to announce:
“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. So I found out I needed to get a kidney transplant due to my Lupus and was recovering. It was what I needed to do for my overall health."
Turns out, her best friend was actually her kidney donor. Francia Raisa, an actress best known for her role in The Secret Life of the American Teenager, gave Selena one of hers.
“There aren’t words to describe how I can possibly thank my beautiful friend Francia Raisa,” said Gomez. “She gave me the ultimate gift and sacrifice by donating her kidney to me. I am incredibly blessed. I love you so much sis.” [Source]