4/36
'80s
How cute are they?!
5/36
Instagram/Kourtney Kardashian
'90s
Kourtney poses with dad Robert Kardashian at a father-daughter dance in 1993.
6/36
Instagram
2001
Throwback!
7/36
J. Vespa/WireImage
2005
Kourtney and Kim match on the red carpet!
8/36
Michael Bezjian/WireImage
2006
So gorg.
9/36
Bruce Gifford/FilmMagic
2007
Red carpet ready!
10/36
Kirby Lee/Getty Images
2007
Baseball babe!
11/36
Charley Gallay/WireImage
2008
Long lockes and tan skin!
12/36
Larry Marano/Getty Image
2008
Lovebirds at the beach...
13/36
Kevin Mazur/WireImage
2009
Glitz and glam!
14/36
Jeffrey Mayer/WireImage
2009
Pregnant with Mason!
15/36
Jerritt Clark/WireImage
2010
All black everything.
16/36
Steven Lawton/FilmMagic
2010
Diva!
17/36
David Becker/WireImage
2011
Kourtney poses with Lord looking happier than ever!
18/36
Mark Von Holden/WireImage
2011
Cheese!
19/36
Brett Kaffee/Thibault Monnier; PacificCoastNews.com
2012
A day in the life...
20/36
BRJ/FAMEFLYNET PICTURES
2012
Kourtney shows off lighter hair while getting a bear hug!
21/36
INFphoto.com
2013
One hot mama!
22/36
VM/WCP/Javiles/FAMEFLYNET
2014
Chic, youthful and fun!
23/36
AKM-GSI
2014
Kourtney glowing with baby #3!
24/36
IXOLA/AKM-GSI
2015
Dinner date!