celebrities The Most Immature Adult Celebs  

Celebrity Lists
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List Rules Vote up the adult celebrities (18 or older) who exhibit childish behavior and need to grow tf up.

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.)

list ordered by

1
641 237
Donald Trump is listed (or ranked) 1 on the list The Most Immature Adult Celebs
Donald Trump age 71

2
335 121
Perez Hilton is listed (or ranked) 2 on the list The Most Immature Adult Celebs
Perez Hilton age 40

3
623 202
Justin Bieber is listed (or ranked) 3 on the list The Most Immature Adult Celebs
Justin Bieber age 24

4
782 159
Kanye West is listed (or ranked) 4 on the list The Most Immature Adult Celebs
Kanye West age 40

5
700 156
Kim Kardashian is listed (or ranked) 5 on the list The Most Immature Adult Celebs

6
618 219
Miley Cyrus is listed (or ranked) 6 on the list The Most Immature Adult Celebs
Miley Cyrus age 25

7
16 0
Carole Radziwill is listed (or ranked) 7 on the list The Most Immature Adult Celebs
toputime added Carole Radziwill age 54

8
22 4
Bethenny Frankel is listed (or ranked) 8 on the list The Most Immature Adult Celebs
minkietight added Bethenny Frankel age 47

9
426 153
Chris Brown is listed (or ranked) 9 on the list The Most Immature Adult Celebs
Chris Brown age 28

10
24 2
Ann Coulter is listed (or ranked) 10 on the list The Most Immature Adult Celebs
minkietight added Ann Coulter age 56

11
18 1
Trixie Mattel is listed (or ranked) 11 on the list The Most Immature Adult Celebs
toputime added Trixie Mattel

12
14 0
Phi Phi O'Hara is listed (or ranked) 12 on the list The Most Immature Adult Celebs
carljr52910 added Phi Phi O'Hara

13
16 1
Roxxxy Andrews is listed (or ranked) 13 on the list The Most Immature Adult Celebs
toputime added Roxxxy Andrews

14
400 145
Paris Hilton is listed (or ranked) 14 on the list The Most Immature Adult Celebs
Paris Hilton age 37

The Most Embarrassing Celebrity Yearbook Photos

15
487 188
Nicki Minaj is listed (or ranked) 15 on the list The Most Immature Adult Celebs
Nicki Minaj age 35

16
301 143
Charlie Sheen is listed (or ranked) 16 on the list The Most Immature Adult Celebs
Charlie Sheen age 52

17
20 3
Caitlyn Jenner is listed (or ranked) 17 on the list The Most Immature Adult Celebs

18
383 143
Kylie Jenner is listed (or ranked) 18 on the list The Most Immature Adult Celebs
Kylie Jenner age 20

19
113 29
Farrah Abraham is listed (or ranked) 19 on the list The Most Immature Adult Celebs
ColinBoddy added Farrah Abraham age 26

20
468 162
Kris Jenner is listed (or ranked) 20 on the list The Most Immature Adult Celebs
Kris Jenner age 62

21
371 142
Lindsay Lohan is listed (or ranked) 21 on the list The Most Immature Adult Celebs
Lindsay Lohan age 31

Celebrities Nobody Cares About Anymore

22
343 245
Taylor Swift is listed (or ranked) 22 on the list The Most Immature Adult Celebs
Taylor Swift age 28

23
12 3
Detox is listed (or ranked) 23 on the list The Most Immature Adult Celebs
Detox age 32

24
209 137
Andy Dick is listed (or ranked) 24 on the list The Most Immature Adult Celebs
Andy Dick age 52

25
10 0
Rush Limbaugh is listed (or ranked) 25 on the list The Most Immature Adult Celebs
Rush Limbaugh age 67

26
230 208
Shia LaBeouf is listed (or ranked) 26 on the list The Most Immature Adult Celebs
Shia LaBeouf age 31

27
8 1
Pope Francis is listed (or ranked) 27 on the list The Most Immature Adult Celebs
nbytrezws3dr7r654 added Pope Francis age 81

28
5 1
Alaska Thunderfuck 5000 is listed (or ranked) 28 on the list The Most Immature Adult Celebs

The Most Obvious Celebrity Plastic Surgery

29
37 25
Katy Perry is listed (or ranked) 29 on the list The Most Immature Adult Celebs
JohnWade1 added Katy Perry age 33

30
115 156
Johnny Knoxville is listed (or ranked) 30 on the list The Most Immature Adult Celebs

31
115 149
Jessica Simpson is listed (or ranked) 31 on the list The Most Immature Adult Celebs

32
162 185
Kristen Stewart is listed (or ranked) 32 on the list The Most Immature Adult Celebs

33
149 171
Alec Baldwin is listed (or ranked) 33 on the list The Most Immature Adult Celebs
Alec Baldwin age 60

34
5 2
Kid Rock is listed (or ranked) 34 on the list The Most Immature Adult Celebs
Kid Rock age 47

35
34 46
Kevin Hart is listed (or ranked) 35 on the list The Most Immature Adult Celebs
Natalie Yu added Kevin Hart age 38

Celebrities You Might Not Know Are Siblings

36
89 136
Macaulay Culkin is listed (or ranked) 36 on the list The Most Immature Adult Celebs

37
161 205
Britney Spears is listed (or ranked) 37 on the list The Most Immature Adult Celebs

38
119 173
Seth MacFarlane is listed (or ranked) 38 on the list The Most Immature Adult Celebs

39
9 14
John McEnroe is listed (or ranked) 39 on the list The Most Immature Adult Celebs
JohnWade1 added John McEnroe age 59

40
103 160
Lady Gaga is listed (or ranked) 40 on the list The Most Immature Adult Celebs
Lady Gaga age 32

41
45 22
Mariah Carey is listed (or ranked) 41 on the list The Most Immature Adult Celebs
JohnWade1 added Mariah Carey age 48

42
165 206
Rihanna is listed (or ranked) 42 on the list The Most Immature Adult Celebs
Rihanna age 30

These Big-Name Celebs Have Been Hiding Their Real Names

43
2 2
Gary Busey is listed (or ranked) 43 on the list The Most Immature Adult Celebs
Gary Busey age 73

44
2 3
Avril Lavigne is listed (or ranked) 44 on the list The Most Immature Adult Celebs
Avril Lavigne age 33

45
1 1
Luke Bryan is listed (or ranked) 45 on the list The Most Immature Adult Celebs
Luke Bryan age 41

46
2 4
Iggy Azalea is listed (or ranked) 46 on the list The Most Immature Adult Celebs
Iggy Azalea age 27

47
105 173
Ashton Kutcher is listed (or ranked) 47 on the list The Most Immature Adult Celebs

48
84 128
Taylor Momsen is listed (or ranked) 48 on the list The Most Immature Adult Celebs
Taylor Momsen age 24

49
35 33
Jennifer Lawrence is listed (or ranked) 49 on the list The Most Immature Adult Celebs
ChrissyBaker added Jennifer Lawrence age 27

50
14 12
Metta World Peace is listed (or ranked) 50 on the list The Most Immature Adult Celebs
JohnWade1 added Metta World Peace age 38