Nearly 25 years after the release of Salt-N-Pepa and En Vogue's "Whatta Man," the groups reunited at Sunday's Billboard Music Awards to perform the hit Dave Quinn is a Senior Editor for PEOPLE.

Spinderella (née Deidra Roper) last performed with Salt-N-Pepa as part of their Las Vegas residency last fall. To date, no explanation for her dismissal has been publicly given. Reps for Salt-N ...