Pop singers expand their brands with signature fragrances

Teen heartthrob Justin Bieber is selling his "My World" unisex perfume in collectible dog tags, so you can carry the scent with you wherever you go.Bieber’s dog tags, available in four designs, get kudos for creative packaging and for being unisex, though the strong, candy-sweet scent seems more feminine to us. Also, the wearable "My World" fragrance might make you feel like a rearview mirror