Unfortunately for her, she had been suffering in hospital from kidney failure, as a result of her Lupus.
Luckily her BFF Francia Raisa was there, basically saving her life by offering her own kidney for a transplant.
But Francia wasn't the only one by Selena's side.
Her beloved BF, The Weeknd, changed his tour schedule so he could be right by her side the entire time.
“It was a super serious operation,” a source told People, “and all her friends were worried.”
Luckily Selena has so many loving friends and family around her to help her through recovery <3.