These 24 Celebrity Weight Loss Journeys Are Pretty Mindblowing

Jul 5, 2017 at 4:30 p.m. ET
Amazing celebrity weight loss journeys
Image: Michael Kovac/Getty Images

It's 2017, and by now we know that beautiful bodies come in all shapes and sizes — but sometimes a byproduct of getting healthy is dropping a few pounds. Take, for instance, these celebs who took it upon themselves to overhaul their lifestyles and went through dramatic weight-loss transformations in the process.

Don't be fooled by their shrinking sizes — these celebs are still huge stars.

Originally published January 2015. Updated July 2017.

1 /48: America Ferrera

Amazing celebrity weight loss journeys
Image: Dimitri Halkidis/WENN

1/48 :America Ferrera

2 /48: America Ferrera 2016

Amazing celebrity weight loss journeys
Image: Nicky Nelson/WENN

2/48 :America Ferrera 2016

3 /48: Melissa Mccarthy

Amazing celebrity weight loss journeys
Image: Jason LaVeris/FilmMagic/Getty Images

3/48 :Melissa Mccarthy

4 /48: Melissa McCarthy 2016

Amazing celebrity weight loss journeys
Image: Joseph Marzullo/WENN

4/48 :Melissa McCarthy 2016

5 /48: John Goodman

Amazing celebrity weight loss journeys
Image: David Livingston/Getty Images

5/48 :John Goodman

6 /48: John Goodman 2016

Amazing celebrity weight loss journeys
Image: Ivan Nikolov/WENN

6/48 :John Goodman 2016

7 /48: Shonda Rhimes 2014

Amazing celebrity weight loss journeys
Image: JB Lacroix/WireImage/Getty Images

7/48 :Shonda Rhimes 2014

8 /48: Shonda Rhimes 2016

Amazing celebrity weight loss journeys
Image: WENN

8/48 :Shonda Rhimes 2016

9 /48: Khloé Kardashian 2014

Amazing celebrity weight loss journeys
Image: Jim Spellman/WireImage/Getty Images

9/48 :Khloé Kardashian 2014

10 /48: Khloé Kardashian 2016

Amazing celebrity weight loss journeys
Image: FayesVision/WENN

10/48 :Khloé Kardashian 2016

11 /48: Chris Pratt

Amazing celebrity weight loss journeys
Image: WENN

11/48 :Chris Pratt

12 /48: Chris Pratt 2016

Amazing celebrity weight loss journeys
Image: Nicky Nelson/WENN

12/48 :Chris Pratt 2016

13 /48: Christina Aguilera

Amazing celebrity weight loss journeys
Image: WENN

13/48 :Christina Aguilera

14 /48: Christina Aguilera 2016

Amazing celebrity weight loss journeys
Image: FayesVision/WENN

14/48 :Christina Aguilera 2016

15 /48: Jennifer Hudson

Amazing celebrity weight loss journeys
Image: Nikki Nelson/WENN

15/48 :Jennifer Hudson

16 /48: Jennifer Hudson 2016

Amazing celebrity weight loss journeys
Image: Mario Mitsis/WENN

16/48 :Jennifer Hudson 2016

17 /48: Jason Segel

Amazing celebrity weight loss journeys
Image: Starbux/WENN

17/48 :Jason Segel

18 /48: Jason Segel 2016

Amazing celebrity weight loss journeys
Image: Brian To/WENN

18/48 :Jason Segel 2016

19 /48: Jessica Simpson

Amazing celebrity weight loss journeys
Image: Joseph Marzullo/Wenn.com

19/48 :Jessica Simpson

20 /48: Jessica Simpson 2016

Amazing celebrity weight loss journeys
Image: WENN

20/48 :Jessica Simpson 2016

21 /48: Jonah Hill

Amazing celebrity weight loss journeys
Image: WENN

21/48 :Jonah Hill

22 /48: Jonah Hill 2017

Amazing celebrity weight loss journeys
Image: WENN

22/48 :Jonah Hill 2017

23 /48: Kirstie Alley

Amazing celebrity weight loss journeys
Image: WENN

23/48 :Kirstie Alley

24 /48: Kirstie Alley 2015

Amazing celebrity weight loss journeys
Image: Ivan Nikolov/WENN.com

24/48 :Kirstie Alley 2015

25 /48: Miranda Lambert

Amazing celebrity weight loss journeys
Image: WENN

25/48 :Miranda Lambert

26 /48: Miranda Lambert 2016

Amazing celebrity weight loss journeys
Image: Judy Eddy/WENN

26/48 :Miranda Lambert 2016

27 /48: Jordin Sparks

Amazing celebrity weight loss journeys
Image: WENN

27/48 :Jordin Sparks

28 /48: Jordin Sparks 2016

Amazing celebrity weight loss journeys
Image: Nicky Nelson/WENN

28/48 :Jordin Sparks 2016

29 /48: Queen Latifah

Amazing celebrity weight loss journeys
Image: Adriana M. Barraza/WENN

29/48 :Queen Latifah

30 /48: Queen Latifah 2016

Amazing celebrity weight loss journeys
Image: Adriana M. Barraza/WENN

30/48 :Queen Latifah 2016

31 /48: Kelly Osbourne

Amazing celebrity weight loss journeys
Image: LK/WENN

31/48 :Kelly Osbourne

32 /48: Kelly Osbourne 2016

Amazing celebrity weight loss journeys
Image: Nicky Nelson/WENN

32/48 :Kelly Osbourne 2016

33 /48: Seth Rogen

Amazing celebrity weight loss journeys
Image: WENN

33/48 :Seth Rogen

34 /48: Seth Rogen 2016

Amazing celebrity weight loss journeys
Image: Dave Bedrosian/Future Image/WENN

34/48 :Seth Rogen 2016

35 /48: Snooki

Amazing celebrity weight loss journeys
Image: WENN

35/48 :Snooki

36 /48: Snooki 2016

Amazing celebrity weight loss journeys
Image: FayesVision/WENN

36/48 :Snooki 2016

37 /48: Melissa Joan Hart

Amazing celebrity weight loss journeys
Image: Jody Cortes/WENN

37/48 :Melissa Joan Hart

38 /48: Melissa Joan Hart 2016

Amazing celebrity weight loss journeys
Image: Rob Rich/WENN

38/48 :Melissa Joan Hart 2016

39 /48: Rosie O'Donnell

Amazing celebrity weight loss journeys
Image: WENN

39/48 :Rosie O'Donnell

40 /48: Rosie O'Donnell 2016

Amazing celebrity weight loss journeys
Image: Derrick Salters/WENN

40/48 :Rosie O'Donnell 2016

41 /48: Randy Jackson

Amazing celebrity weight loss journeys
Image: Kevin Winter/Getty Images

41/48 :Randy Jackson

42 /48: Randy Jackson 2016

Amazing celebrity weight loss journeys
Image: Barry King/Getty Images

42/48 :Randy Jackson 2016

43 /48: Zach Galifianakis

Amazing celebrity weight loss journeys
Image: Rob Loud/Getty Images

43/48 :Zach Galifianakis

44 /48: Zach Galifianakis 2016

Amazing celebrity weight loss journeys
Image: Michael Tullberg/Getty Images

44/48 :Zach Galifianakis 2016

45 /48: Sam Smith

Amazing celebrity weight loss journeys
Image: Tim Mosenfelder/Getty Images

45/48 :Sam Smith

46 /48: Sam Smith 2016

Amazing celebrity weight loss journeys
Image: Tim Mosenfelder/Getty Images

46/48 :Sam Smith 2016

47 /48: Adele

Amazing celebrity weight loss journeys
Image: Gareth Cattermole/Getty Images

47/48 :Adele

48 /48: Adele 2017

Amazing celebrity weight loss journeys
Image: Jason LaVeris/Getty Images

48/48 :Adele 2017