celebrities The Most Immature Adult Celebs  

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List Rules Vote up the adult celebrities (18 or older) who you think are the most immature and don't act their age.

When it comes to celebrities who don't act their age, Hollywood pretty much has an endless supply. Not that acting like a kid is always a bad thing. Sometimes celebrities who are immature can be hilarious, entertaining us with their antics in movies or TV shows. (What kind of world would this be without Will Ferrell acting like a jealous step-brother, adorable elf, or self-obsessed anchorman?) But other times, immature celebrities can be super annoying.  Their constant attempts to prove just how "shocking" or "edgy" the are leads to ridiculously bad behavior that the whole world has to put up with.

So which famous immature people are the most childish of them all? This list will help us finally figure it out. Less than impressed with Miley's many Instagram photos of her new sex toys? Totally over naked selfies from Kim Kardashian-West? Literally can't stand anything Justin Bieber does? You're not alone! Make sure the worst offenders are at the top of this immature celebrity list! 

Vote up the celebrities who act immature on the most consistent basis. Here's hoping they finally grow up. (But don't hold your breath.)

1
+ - 598 110
Kanye West is listed (or ranked) 1 on the list The Most Immature Adult Celebs
Kanye West age 39

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2
+ - 545 105
Kim Kardashian is listed (or ranked) 2 on the list The Most Immature Adult Celebs

3
+ - 479 156
Miley Cyrus is listed (or ranked) 3 on the list The Most Immature Adult Celebs
Miley Cyrus age 24

4
+ - 460 149
Justin Bieber is listed (or ranked) 4 on the list The Most Immature Adult Celebs
Justin Bieber age 23

5
+ - 383 134
Nicki Minaj is listed (or ranked) 5 on the list The Most Immature Adult Celebs
Nicki Minaj age 34

6
+ - 355 123
Kris Jenner is listed (or ranked) 6 on the list The Most Immature Adult Celebs
Kris Jenner age 61

7
+ - 433 182
Donald Trump is listed (or ranked) 7 on the list The Most Immature Adult Celebs
Donald Trump age 70

8
+ - 322 119
Chris Brown is listed (or ranked) 8 on the list The Most Immature Adult Celebs
Chris Brown age 27

9
+ - 300 109
Paris Hilton is listed (or ranked) 9 on the list The Most Immature Adult Celebs
Paris Hilton age 36

10
+ - 279 110
Kylie Jenner is listed (or ranked) 10 on the list The Most Immature Adult Celebs
Kylie Jenner age 19

11
+ - 279 114
Lindsay Lohan is listed (or ranked) 11 on the list The Most Immature Adult Celebs
Lindsay Lohan age 30

12
+ - 231 103
Perez Hilton is listed (or ranked) 12 on the list The Most Immature Adult Celebs
Perez Hilton age 39

13
+ - 275 154
Ariana Grande is listed (or ranked) 13 on the list The Most Immature Adult Celebs
Ariana Grande age 23

14
+ - 227 118
Charlie Sheen is listed (or ranked) 14 on the list The Most Immature Adult Celebs
Charlie Sheen age 51

15
+ - 84 17
Carrie Underwood is listed (or ranked) 15 on the list The Most Immature Adult Celebs

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16
+ - 269 191
Taylor Swift is listed (or ranked) 16 on the list The Most Immature Adult Celebs
Taylor Swift age 27

17
+ - 56 7
Farrah Abraham is listed (or ranked) 17 on the list The Most Immature Adult Celebs

18
+ - 169 113
Andy Dick is listed (or ranked) 18 on the list The Most Immature Adult Celebs
Andy Dick age 51

19
+ - 156 102
Carrot Top is listed (or ranked) 19 on the list The Most Immature Adult Celebs
Carrot Top age 52

20
+ - 182 138
Sarah Palin is listed (or ranked) 20 on the list The Most Immature Adult Celebs
Sarah Palin age 53

21
+ - 169 179
Shia LaBeouf is listed (or ranked) 21 on the list The Most Immature Adult Celebs
Shia LaBeouf age 30

22
+ - 133 153
Kristen Stewart is listed (or ranked) 22 on the list The Most Immature Adult Celebs

23
+ - 63 65
Madonna is listed (or ranked) 23 on the list The Most Immature Adult Celebs
Madonna age 58

24
+ - 117 140
Alec Baldwin is listed (or ranked) 24 on the list The Most Immature Adult Celebs
Alec Baldwin age 59

25
+ - 134 166
Rihanna is listed (or ranked) 25 on the list The Most Immature Adult Celebs
Rihanna age 29

26
+ - 98 122
Johnny Knoxville is listed (or ranked) 26 on the list The Most Immature Adult Celebs

27
+ - 15 11
Kevin Hart is listed (or ranked) 27 on the list The Most Immature Adult Celebs
Kevin Hart age 37

28
+ - 101 128
Adam Sandler is listed (or ranked) 28 on the list The Most Immature Adult Celebs
Adam Sandler age 50

29
+ - 20 21
Donatella Versace is listed (or ranked) 29 on the list The Most Immature Adult Celebs

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30
+ - 130 173
Britney Spears is listed (or ranked) 30 on the list The Most Immature Adult Celebs

31
+ - 37 47
Beyoncé Knowles is listed (or ranked) 31 on the list The Most Immature Adult Celebs

32
+ - 104 143
Seth MacFarlane is listed (or ranked) 32 on the list The Most Immature Adult Celebs

33
+ - 90 128
Jessica Simpson is listed (or ranked) 33 on the list The Most Immature Adult Celebs

34
+ - 73 104
Taylor Momsen is listed (or ranked) 34 on the list The Most Immature Adult Celebs
Taylor Momsen age 23

35
+ - 10 14
Jim Carrey is listed (or ranked) 35 on the list The Most Immature Adult Celebs
Jim Carrey age 55

36
+ - 86 129
Lady Gaga is listed (or ranked) 36 on the list The Most Immature Adult Celebs
Lady Gaga age 31

37
+ - 7 15
Christian Bale is listed (or ranked) 37 on the list The Most Immature Adult Celebs

38
+ - 96 149
Jimmy Fallon is listed (or ranked) 38 on the list The Most Immature Adult Celebs
Jimmy Fallon age 42

39
+ - 8 18
Idris Elba is listed (or ranked) 39 on the list The Most Immature Adult Celebs
Idris Elba age 44

40
+ - 6 18
Ellen DeGeneres is listed (or ranked) 40 on the list The Most Immature Adult Celebs

41
+ - 65 108
Macaulay Culkin is listed (or ranked) 41 on the list The Most Immature Adult Celebs

42
+ - 7 21
John Cena is listed (or ranked) 42 on the list The Most Immature Adult Celebs
John Cena age 39

43
+ - 5 18
Ryan Gosling is listed (or ranked) 43 on the list The Most Immature Adult Celebs
Ryan Gosling age 36

44
+ - 4 17
Tom Hardy is listed (or ranked) 44 on the list The Most Immature Adult Celebs
Tom Hardy age 39

45
+ - 6 23
Denzel Washington is listed (or ranked) 45 on the list The Most Immature Adult Celebs

46
+ - 85 151
Ashton Kutcher is listed (or ranked) 46 on the list The Most Immature Adult Celebs

47
+ - 2 14
Michael Fassbender is listed (or ranked) 47 on the list The Most Immature Adult Celebs

48
+ - 47 127
Russell Crowe is listed (or ranked) 48 on the list The Most Immature Adult Celebs
Russell Crowe age 53

49
+ - 39 124
Joaquin Phoenix is listed (or ranked) 49 on the list The Most Immature Adult Celebs