Kristen Stewart tops Forbes' 2011 list of Best Actors for the Buck

9 of 10: Meryl Streep is No. 9 on Forbes' list of Best Actors For The Buck. Her movies make its studios an average of $13.54 for every dollar she is paid, the magazine says - down from $21 last year.

The Oscar-winning actress last appeared on the big screen in 2009, when she starred in 'Julie and Julia' and the romantic comedy 'It's Complicated,' both of which made more than $348 million worldwide collectively. She can be seen next in 'The Iron Lady,' playing main character Margaret Thatcher, who earned the title nickname when she served as prime minister of the United Kingdom. The film is set for release on Jan. 13, 2011. Check out a trailer here.

Forbes has previously reported that the actress earned $10 million between May 2010 and May 2011, making her No. 10 on its 2011 list of highest-paid actresses.

(Pictured: Meryl Streep appears in this 2011 promotional photo as Margaret Thatcher for the movie 'The Iron Lady.') (Alex Bailey / Pathe)