If you were to write a letter to your 16-year-old self, what would it say?

In Dear Me, some of the world's most famous and best loved celebrities, from actors to chefs, directors to musicians, have written just such a letter.

The letters range from the compassionate to the shocking via hilarity and heartbreak, but they all have one thing in common: they offer a unique insight into the teenager who would grow up to be... J.K. Rowling, Hugh Jackman, Kathleen Turner, Stan Lee, James Belushi, Moon Zappa, Seth Green, Piers Morgan, Jodi Picoult, Stephen King, Phil Ramone, Michael Winner, Alan Cumming, Jerry Springer, Armistead Maupin, E from The Eels, Ferran Adrià, Rose McGowan, James Woods or Gillian Anderson.

It is the perfect gift for your mum or dad, sister or brother, gran or granddad, or someone who is a teenager, even turning 16.