Christina Aguilera may have buried her ample assets in a — gasp! — PANTSUIT when she guested on ”Ellen,” but you didn’t think she’d really cleaned up her act, did you? The dirrty diva’s a fan of Third Rail Jewelry’s ”Stripper” earrings. (”American Idol”’s Fantasia owns a similar, tamer version with her name in the hoop.) The bauble represents ”what happens when street meets fashion,” says a company rep. Street corner, perhaps?