The longer Billy Bob Thornton is famous, the longer his hair gets.
Here's the 55-year-old star at an event in L.A. on Wednesday (left) -- and the less hirsute version back in 1997 (right).
Unbeweavable ... we're just sayin'.
Billy Bob Thornton -- All Growed IN
12/16/2010 8:25 PM PST BY Johnny Lopez
Get TMZ Breaking News alerts to your inbox