Being a muse is nothing new to Christina Aguilera, whose retro-inspired fashion sense is appreciated by many the world’s top designers and stylists — and jeweler Stephen Webster is no exception. The London-based designer, who is known for his unconventional, modern jewelry, has just selected the star as the face of his new Spring 2008 advertising campaign. The ads, which feature the singer swathed in his luxe collection of necklaces, cuffs, rings, and earrings, play on the singer’s Old Hollywood glamour while giving a nod to classic Hitchcock films like Rear Window. And although the pair’s business arrangement is new, the star has long been a fan of Webster as a designer — and a person. “Stephen and I have been friends for many years,” Aguilera says, “He is a wonderful designer with a creative spirit and innovative vision, and I am honored to be a part of it all.” And we can’t wait to see the rest of the campaign when it launches in the April issue of W Magazine.