Note to film executives: If you want Julia Roberts or Cameron Diaz in your next film, get ready to dish out the big dough.

Roberts and Diaz are the highest paid actresses in show business, according to the Hollywood Reporter, each commanding $20 million a film.

The figures are part of the trade paper's Women in Entertainment report, which also ranks the top female executives in entertainment.

Nicole Kidman, Reese Witherspoon and Drew Barrymore come in next behind Roberts and Diaz on the magazine's "Million Dollar Babies" list, which reveals the top 10 highest-paid actresses -- with a $15 million price tag each.

Rounding out the top 10 are Halle Berry ($14 million), Sandra Bullock ($12 million to $15 million), Angelina Jolie ($12 million to $15 million), Renee Zellweger ($12 million) and Jennifer Lopez ($12 million).

The Reporter also listed "breakout performers," which included Kirsten Dunst ($8 million) and Lindsay Lohan ($7.5 million).

Among the top 10 female executives on the Reporter's list were Harpo Productions head Oprah Winfrey (No. 8) and outgoing Paramount chief Sherry Lansing (No. 7). Anne Sweeney, the co-chairman of Media Networks, the Walt Disney Co. and president of the Disney-ABC Television Group, topped the list.