People Magazine - Proactiv Solution, the world’s best-selling pimple-fighting beauty regimen, probably also boasts the longest and most renowned list of celebrity spokespeople—especially with the just-announced additions of Katy Perry, Avril Lavigne and Jenna Fischer to their lineup. WWD reports that the trio of stars will join Proactiv’s famous pitchpeople — which already include Mandy Moore, Jennifer Love Hewitt, Julianne Hough — by touting the acne remedy with televised one-minute, two-minute, and 30-second commercials launching later this month. They’ll be compensated handsomely in return, as company exec Ben Van de Bunt confirms, “We are paying people consistently with what we have done in