This British comedian and political commentator might take the prize for 'biggest transformation.' Brand has often said that he was a very different person as a child, and based on the evidence he wasn't joking. Who would have thought that this chubby kid would grow up to entertain and outrage half the world? Just about everything about him has changed, although you can just about identify him from those distinctive eyebrows. Brand struggled with bulimia when he was younger, although we're happy to say he recovered as an adult.
Brand is now considered to be something of a sex symbol - something which won him the attention of Katy Perry, although their volatile marriage only lasted a single year. He migrated from comedy to politics as he entered his late 30s, with his socialist views making him something of a polarizing figure in the press. These days he's more interested in writing books than making movies, and has settled into domestic bliss with his second wife.