21 May 2009Billy Bob Thornton, once best known for his acting ability, has recently been drawing attention for more personal reasons as his youthful visage sparks plastic surgery rumours. The 54 year old star, who recently incensed Canadians after dubbing them as boring, is currently at the centre of speculation concerning his youthful good looks. Hair transplants and dye have freshened his appearance but the star is rumoured to have also undergone some subtle cosmetic surgery, such as Botox or fillers, to turn back the clock.According to celebrity surgery news site Make Me Heal, Plastic surgeon Dr. Sherrell J. Aston said: "Billy Bob Thornton looks great. An apparent change is in his hair pattern and colour. Prior to surgery Mr. Thornton always wore a hat, which covered his baldness and gray hair. Now he is looking more confident than ever. His hair transplant doctor did a good job. He may have had some facial procedures but it is hard to confirm from the photos I have seen." Billy Bob shot to fame after writing directing and starring in independent film Sling Blade. A varied and rich career followed with the star receiving a star on the Hollywood Walk of Fame in 2004. The actor is also well known for his five marriages, the most famous being to Hollywood sweetheart Angelina Jolie. Angelina and current husband Brad Pitt are also often the subject of much cosmetic surgery speculation, but the pair have kept quiet about the techniques that keep them at the top of America's most desirable lists.