Is this scar a sign Christina Aguilera has had breast implants?

By DAILY MAIL REPORTER Sign of surgery? Christina Aguilera revealed what looked like a scar on her underarm while promoting her new film Burlesque in Tokyo, Japan, yesterday Christina Aguilera has never commented on speculation her buxom figure has had a helping hand from a plastic surgeon.But as the star waved to fans at the Tokyo press conference for her new film, Burlesque, an apparent scar