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Benedict Cumberbatch, Kristen Stewart, Sarah Jessica Parker, Tom Hiddleston, Justin Bieber, hot or not

It's a debate that goes as far back to the days of the cave people, where people would sit around the fire after a day of hunting and/or gathering and decide whether the people in the surrounding caves were attractive or not. It's just what we do as humans. We judge people's faces. We can't help it.

And now that we have celebrities who are in our TV screens and movies theaters and on our magazines, we have a whole army of attractive people to stare at. And with that staring comes the inevitable question: is this celeb hot or not?

There are so many actors and actresses that the world cannot unanimously decide on regarding their hotness factor. And people will argue to the point of ruined friendships over whether someone like Benedict Cumberbatch or Sarah Jessica Parker is hot or not. It's quite an interesting phenomenon when you find a celeb super sexy, and yet your best friend can barely stand to look at them on the red carpet. 

So we came up with a list of 38 stars that are known for causing fierce debates when it comes to their physical appearance. This is not about their acting ability or their personality or whatever. This is all very shallow so just let it happen.

To be clear: we are not saying that any of these people are ugly or not attractive. We are just observing the polarizing reaction each of these celebs receive whenever they hit the red carpet or the Internet.

Take a look at them and cast your vote. Choose your side! Make your stance known! FOR SCIENCE!

1. Benedict Cumberbatch

Benedict Cumberbatch

Jason Merritt/Getty Images

Benedict Cumberbatch
Hot or Not?
39.7
60.3

2. Kristen Stewart

Kristen Stewart, Kids Choice Awards

Frazer Harrison/Getty Images for KCA

Kristen Stewart
Hot or Not?
54.4
45.6

3. Sarah Jessica Parker

Sarah Jessica Parker, MET Gala

Julian Mackler/BFAnyc/Sipa USA

Sarah Jessica Parker
Hot or Not?
27.5
72.5

4. Miles Teller

Miles Teller

Mike Marsland/WireImage

Miles Teller
Hot or Not?
37.7
62.3

5. Josh Hutcherson

Josh Hutcherson, Teen Choice Awards

Kevin Winter/Getty Images

Josh Hutcherson
Hot or Not?
46.4
53.6

6. Anne Hathaway

Anne Hathaway

Melissa Hebeler

Anne Hathaway
Hot or Not?
53.7
46.3

7. Justin Bieber

Justin Bieber

Bill Davila/startraksphoto.com

Justin Bieber
Hot or Not?
20.2
79.8

8. Cara Delevingne

Cara Delevingne, MET Gala

Dimitrios Kambouris/Getty Images

Cara Delevingne
Hot or Not?
57.0
43.0

9. Adrien Brody

Adrien Brody, hot or not

Venturelli/Getty Images for BVLGARI

Adrien Brody
Hot or Not?
36.1
63.9

10. Joseph Gordon-Levitt

Joseph Gordon-Levitt

Kevin Winter/Getty Images

Joseph Gordon-Levitt
Hot or Not?
64.7
35.3

11. Tom Cruise

Tom Cruise

AKM-GSI

Tom Cruise
Hot or Not?
44.6
55.4

12. Russell Brand

Russell Brand

Alo Ceballos/GC Images

Russell Brand
Hot or Not?
15.7
84.3

13. Tobey Maguire

Tobey Maguire, hot or not

Jemal Countess/Getty Images

Tobey Maguire
Hot or Not?
24.7
75.3

14.  Jay-Z

Jay Z, Jay-Z

Prince Williams/FilmMagic

Jay Z
Hot or Not?
6.2
93.8

15. Martin Freeman

Martin Freeman, hot or not

Simon James/WireImage

Martin Freeman
Hot or Not?
26.3
73.7

16. Eddie Redmayne

Eddie Redmayne

Larry Busacca/Getty Images for BFCA

Eddie Redmayne
Hot or Not?
41.9
58.1

17. Benicio Del Toro

Benicio del Toro

Jason Merritt/Getty Images

Benicio del Toro
Hot or Not?
12.5
87.5

18. Matt Smith

Matt Smith, Dr. Who

BBC

Matt Smith
Hot or Not?
18.1
81.9

19. Katy Perry

Katy Perry, American Music Awards

Michael Buckner/AMA2013/Getty Images for DCP

Katy Perry
Hot or Not?
73.8
26.2

20. Tom Hiddleston

Tom Hiddleston

Courtesy: Alberto E. Rodriguez/WireImage

Tom Hiddleston
Hot or Not?
54.9
45.1

21. Miley Cyrus

Miley Cyrus

Larry Busacca/Getty Images for NARAS

Miley Cyrus
Hot or Not?
33.7
66.3

22. Damian Lewis

Emmy Awards, DAMIAN LEWIS

ABC/TODD WAWRYCHUK

Damian Lewis
Hot or Not?
25.4
74.6

23. Elisabeth Moss

Elisabeth Moss

Jason Merritt/Getty Images

Elisabeth Moss
Hot or Not?
23.3
76.7

24. Jason Sudeikis

Jason Sudeikis,SNL

Dana Edelson/NBC

Jason Sudeikis
Hot or Not?
36.5
63.5

25. Tilda Swinton

Tilda Swinton, hot or not

VALERY HACHE/AFP/GettyImages

Tilda Swinton
Hot or Not?
13.8
86.2

26. Cameron Diaz

Cameron Diaz

Sasha, PacificCoastNews.com

Cameron Diaz
Hot or Not?
62.1
37.9

27. Mark Ruffalo

Mark Ruffalo

Andrew H. Walker/Getty Images for Nantucket Film Festival)

Mark Ruffalo
Hot or Not?
42.7
57.3

28. Hilary Swank

Hilary Swank, hot or not

Brian Zak/Sipa Press via AP Images

Hilary Swank
Hot or Not?
28.8
71.2

29. Fred Armisen

Fred Armisen

Imeh Akpanudosen/Getty Images

Fred Armisen
Hot or Not?
4.7
95.3

30. Harry Styles

Harry Styles

Palace Lee/PacificCoastNews

Harry Styles
Hot or Not?
35.5
64.5

31. Robert Pattinson

Robert Pattinson

Chris Pizzello/Invision/AP

Robert Pattinson
Hot or Not?
56.7
43.3

32. Kaley Cuoco-Sweeting

Kaley Cuoco

Mark Davis/Getty Images

Kaley Cuoco-Sweeting
Hot or Not?
57.5
42.5

33. Jason Segel

Jason Segel, Bad Teacher, Onscreen Teachers

Courtesy of Sony Pictures

Jason Segel
Hot or Not?
29.6
70.4

34. Adrian Grenier

Adrian Grenier

Courtesy of Michael Kovac/WireImage.com

Adrian Grenier
Hot or Not?
61.6
38.4

35. Owen Wilson

Owen Wilson, hot or not

Elisabetta A. Villa/WireImage

Owen Wilson
Hot or Not?
36.2
63.8

36. Joaquin Phoenix

Joaquin Phoenix, hot or not

Dominique Charriau/WireImage

Joaquin Phoenix
Hot or Not?
34.8
65.2

37. Jeff Goldblum

Jeff Goldblum

YouTube

Jeff Goldblum
Hot or Not?
18.4
81.6

38. Michael Fassbender

Michael Fassbender

Jason Merritt/Getty Images

Michael Fassbender
Hot or Not?
77.6
22.4

So which unconventionally attractive celebs do you have it bad for? Is there any star not on this list that your friends are obsessed with but you still don't see the appeal? Let's talk it out in the comments. And then maybe next time we can list all the celebs that every single human on earth can agree is hot as hell.