In a new HBO documentary, Love, Marilyn takes an intimate look into the never-before-seen letters, diaries and notebooks of Marilyn Monroe.

Celebrities featured in the documentary include” Ben Foster, Paul Giamatti, Marisa Tomei, Evan Rachel Wood, Elizabeth Banks, Uma Thurman, Jeremy Piven, Viola Davis, Adrien Brody, Lindsay Lohan, Ellen Burstyn, Glenn Close, Jennifer Ehle, Jennifer Ehle, F. Murray Abraham, Jack Huston, David Strathairn, Janet McTeer, Oliver Platt , Lili Taylor, and Stephen Lang. The celebrities talk about Marilyn’s life and how she impacted them and/or they bring to life some key excerpts from her personal writings.

Apparently there is a lot we don’t know about Marilyn and who the real woman was behind her celebrity persona. Through all of her letters, diaries, and notebooks, we get to learn more about who Marilyn really was. It looks quite fascinating, actually! The film debuted at festivals earlier this year and will premiere on HBO in 2013. Check out the trailer below.

Watch the trailer after the jump…