how many films has Kristen Stewart been on??

29.
IMDB

Snow White and the Huntsman (pre-production)
Snow White

2012 The Twilight Saga: Breaking Dawn - Part 2 (post-production)
Bella Cullen

2011 On the Road (post-production)
Marylou

2011 The Twilight Saga: Breaking Dawn - Part 1 (post-production)
Bella Swan

2010/I Eclipse
Bella Swan

2010 The Runaways
Joan Jett

2010 Welcome to the Rileys
Allison alias Mallory

2009 New Moon
Bella Swan

2009 Adventureland
Em Lewin

2008 The Sarah Silverman Program. (TV series)
Announcer
– I Thought My Dad Was Dead, But It Turns Out He's Not (2008) … Announcer (uncredited)

2008/I Twilight
Bella Swan

2008 Jumper
Sophie

2008 What Just Happened
Zoe

2008 The Yellow Handkerchief
Martine

2007 Cutlass (short)
Young Robin

2007 Into the Wild
Tracy Tatro

2007 The Cake Eaters
Georgia Kaminski

2007 The Messengers
Jess

2007 In the Land of Women
Lucy Hardwicke

2005 Zathura: A l’espace Adventure
Lisa

2005 Fierce People
Maya

2004 Undertow
Lila

2004 Catch That Kid
Maddy

2004 Speak
Melinda Sordino

2003 Cold Creek Manor
Kristen Tilson

2002 Panic Room
Sarah Altman

2001 The Safety of Objects
Sam Jennings

2000 The Flintstones in Viva Rock Vegas
Ring Toss Girl (uncredited)

1999 The Thirteenth an (TV movie)
Girl in fontaine Line (uncredited)

Since toi already got your actual answers, I think I can respond with my sarcastic moody one. Don't know, don't care to know.

1. panic room
2. the safety of objects
3. cold creek manor
4. undertow
5. catch that kid
6. Zathura
7. speak
8. The Messengers
9. Into the wild
10. in the land of women
11. Fierce People
12. what just happened
13. twilight
14. jumper
15. New moon
16. Cake Eater
17. adventure land
18. the yellow handkerchief
19. Eclipse
20. The runaways
21. welcome to the rileys
22. Breaking dawn part 1
23. Breaking dawn part 2

Just out of curiosity.. Why are toi asking this on the aléatoire spot and not on the Kristen Stewart spot?

I only know these.
Twilight,New Moon,Eclipse,Breaking Dawn part 1,Breaking Dawn part 2.
Zathura.