Devin Booker shares a close family bond with his sister, Mya Powell, who has frequently been a prominent and inspiring presence in his life and career. Mya lives with a genetic chromosomal disorder known as microdeletion syndrome, and Booker has consistently used his platform, commercial partnerships, and charitable efforts to raise awareness, advocate for individuals with special needs, and honor his sister as one of his primary personal motivations both on and off the basketball court.