Nothing can slow her down!

Selena Gomez revealed yesterday that she underwent a secret kidney transplant over the summer, but she sure had a fast recovery, because she's already back on set working hard on her new Woody Allen movie. Her bestie Francia Raisa served as her donor, and the two have been open about the procedure on social media in an attempt to raise awareness for lupus.

The "Come & Get It" songstress' beau The Weeknd has been by her side every step of the way, and it's only strengthened their bond.

"Abel has been one of her biggest supports. She had been traveling with him on his tour and he was off during her surgery and right after during her recovery. He’s been very caring and it’s meant a lot to her to have him by her side," a source dished to People.

"She was feeling really lethargic and worn out before the surgery. The surgery was a couple months ago so she’s been recovering and is in a much healthier place now. Her close group of girlfriends have all been there for her," the source added.

Raisa, for her part, was more than happy to step in to help her friend, and even considered it a "blessing" in her life.

"I am beyond grateful that God would trust me with something that not only saved a life, but changed mine in the process. This was part of our story, and we will share it soon, but what is important now is that this is not the only story. For more information regarding Lupus, please go to the Lupus Research Alliance website: -- Love you sis, so glad we’re on this journey together. ❤️ xx," she wrote on Instagram.

We wonder if Justin Bieber has sent his well wishes?