La Toya Jackson made a striking appearance at the Los Angeles premiere of “Michael,” the highly anticipated biopic about her late brother Michael Jackson.

Michael Jackson is finally getting the music biopic treatment this week with Michael, starring the late pop icon’s nephew, Jaafar Jackson — Jermaine Jackson’s son — in the title role.

“Hugely impressive musical and dance performances from the two young men playing Michael Jackson cannot shake off the uncomfortable fact that there is an entire other side to the pop star’s story whic...