Actress-singer Selena Gomez will "never ever, ever be more in debt" to anyone than actress Francia Raisa.

The 30-year-old singer-and-actress received a kidney transplant from the `Grown-ish` star in 2017 to help combat the health issues she was suffering as a result of auto-immune condition lupus and she`s paid tribute to her "best friend" for her selfless gesture, acknowledging she was "so, so, so lucky", reports `Female First UK`.