Celebrities The Most Immature Adult Celebs  

Celebrity Lists
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19.6k votes 1.9k voters 23.3k views 64 items

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.)

1
711 259
Donald Trump is listed (or ranked) 1 on the list The Most Immature Adult Celebs
Donald Trump age 71

2
377 133
Perez Hilton is listed (or ranked) 2 on the list The Most Immature Adult Celebs
Perez Hilton age 40

3
678 225
Justin Bieber is listed (or ranked) 3 on the list The Most Immature Adult Celebs
Justin Bieber age 24

4
836 176
Kanye West is listed (or ranked) 4 on the list The Most Immature Adult Celebs
Kanye West age 40

5
752 174
Kim Kardashian is listed (or ranked) 5 on the list The Most Immature Adult Celebs

6
53 16
Bethenny Frankel is listed (or ranked) 6 on the list The Most Immature Adult Celebs
minkietight added Bethenny Frankel age 47

7
674 233
Miley Cyrus is listed (or ranked) 7 on the list The Most Immature Adult Celebs
Miley Cyrus age 25

8
471 161
Chris Brown is listed (or ranked) 8 on the list The Most Immature Adult Celebs
Chris Brown age 28

9
46 17
Ann Coulter is listed (or ranked) 9 on the list The Most Immature Adult Celebs
minkietight added Ann Coulter age 56

10
41 6
Trixie Mattel is listed (or ranked) 10 on the list The Most Immature Adult Celebs
toputime added Trixie Mattel

11
52 13
Caitlyn Jenner is listed (or ranked) 11 on the list The Most Immature Adult Celebs

12
33 6
Roxxxy Andrews is listed (or ranked) 12 on the list The Most Immature Adult Celebs
toputime added Roxxxy Andrews

13
426 154
Paris Hilton is listed (or ranked) 13 on the list The Most Immature Adult Celebs
Paris Hilton age 37

14
511 196
Nicki Minaj is listed (or ranked) 14 on the list The Most Immature Adult Celebs
Nicki Minaj age 35

The Most Embarrassing Celebrity Yearbook Photos

15
322 153
Charlie Sheen is listed (or ranked) 15 on the list The Most Immature Adult Celebs
Charlie Sheen age 52

16
407 155
Kylie Jenner is listed (or ranked) 16 on the list The Most Immature Adult Celebs
Kylie Jenner age 20

17
26 6
Carole Radziwill is listed (or ranked) 17 on the list The Most Immature Adult Celebs
toputime added Carole Radziwill age 54

18
131 31
Farrah Abraham is listed (or ranked) 18 on the list The Most Immature Adult Celebs
ColinBoddy added Farrah Abraham age 26

19
492 167
Kris Jenner is listed (or ranked) 19 on the list The Most Immature Adult Celebs
Kris Jenner age 62

20
21 5
Phi Phi O'Hara is listed (or ranked) 20 on the list The Most Immature Adult Celebs
carljr52910 added Phi Phi O'Hara

21
392 145
Lindsay Lohan is listed (or ranked) 21 on the list The Most Immature Adult Celebs
Lindsay Lohan age 29

Natural Beauties Who Don't Need No Make-Up

22
21 7
Detox is listed (or ranked) 22 on the list The Most Immature Adult Celebs
Detox age 32

23
366 258
Taylor Swift is listed (or ranked) 23 on the list The Most Immature Adult Celebs
Taylor Swift age 28

24
222 137
Andy Dick is listed (or ranked) 24 on the list The Most Immature Adult Celebs
Andy Dick age 52

25
23 7
Rush Limbaugh is listed (or ranked) 25 on the list The Most Immature Adult Celebs
Rush Limbaugh age 67

26
20 10
Pope Francis is listed (or ranked) 26 on the list The Most Immature Adult Celebs
nbytrezws3dr7r654 added Pope Francis age 81

27
13 3
Alaska Thunderfuck 5000 is listed (or ranked) 27 on the list The Most Immature Adult Celebs

28
243 214
Shia LaBeouf is listed (or ranked) 28 on the list The Most Immature Adult Celebs
Shia LaBeouf age 31

The Most Obvious Celebrity Plastic Surgery

29
50 33
Katy Perry is listed (or ranked) 29 on the list The Most Immature Adult Celebs
JohnWade1 added Katy Perry age 33

30
163 174
Alec Baldwin is listed (or ranked) 30 on the list The Most Immature Adult Celebs
Alec Baldwin age 60

31
121 162
Johnny Knoxville is listed (or ranked) 31 on the list The Most Immature Adult Celebs

32
13 8
Kid Rock is listed (or ranked) 32 on the list The Most Immature Adult Celebs
Kid Rock age 47

33
173 194
Kristen Stewart is listed (or ranked) 33 on the list The Most Immature Adult Celebs

34
121 155
Jessica Simpson is listed (or ranked) 34 on the list The Most Immature Adult Celebs

35
41 58
Kevin Hart is listed (or ranked) 35 on the list The Most Immature Adult Celebs
Natalie Yu added Kevin Hart age 38

Famous Schizophrenics

36
170 216
Britney Spears is listed (or ranked) 36 on the list The Most Immature Adult Celebs

37
97 147
Macaulay Culkin is listed (or ranked) 37 on the list The Most Immature Adult Celebs

38
13 20
John McEnroe is listed (or ranked) 38 on the list The Most Immature Adult Celebs
JohnWade1 added John McEnroe age 59

39
124 181
Seth MacFarlane is listed (or ranked) 39 on the list The Most Immature Adult Celebs

40
58 27
Mariah Carey is listed (or ranked) 40 on the list The Most Immature Adult Celebs
JohnWade1 added Mariah Carey age 48

41
114 169
Lady Gaga is listed (or ranked) 41 on the list The Most Immature Adult Celebs
Lady Gaga age 32

42
9 7
Gary Busey is listed (or ranked) 42 on the list The Most Immature Adult Celebs
Gary Busey age 73

These Big-Name Celebs Have Been Hiding Their Real Names

43
173 213
Rihanna is listed (or ranked) 43 on the list The Most Immature Adult Celebs
Rihanna age 30

44
8 9
Iggy Azalea is listed (or ranked) 44 on the list The Most Immature Adult Celebs
Iggy Azalea age 27

45
6 7
Luke Bryan is listed (or ranked) 45 on the list The Most Immature Adult Celebs
Luke Bryan age 41

46
18 3
Logan Paul is listed (or ranked) 46 on the list The Most Immature Adult Celebs

47
4 12
Avril Lavigne is listed (or ranked) 47 on the list The Most Immature Adult Celebs
Avril Lavigne age 33

48
18 4
Amy Schumer is listed (or ranked) 48 on the list The Most Immature Adult Celebs
Amy Schumer age 36

49
88 132
Taylor Momsen is listed (or ranked) 49 on the list The Most Immature Adult Celebs
Taylor Momsen age 24

50
110 184
Ashton Kutcher is listed (or ranked) 50 on the list The Most Immature Adult Celebs