Khloe Kardashian's evolving looks - from the 'fat sister' next to Kim and Kourtney to a bikini babe - as she turns 40-years-old

Khloe Alexandra Kardashian turned 40-years-old on Thursday.

It is quite a milestone for the TV star who has done so much in her four decades.

The Calabasas, California native has had some incredible accomplishments, from the 'fat sister' next to slender sisters Kim and Kourtney, to a bikini bombshell who lands magazine covers.

She came to fame on Keeping Up With The Kardashians in 2007, made spinoffs and married LA Lakers great Lamar Odom.

Then her world changed.

After she left Odom, Khloe hit the gym and became pinup #1 in the KarJenner clan, causing her to land her own modeling contracts for companies like The Gap and spinoff shows like Kocktails With Khloe.

Here is a look back at the evolution of one of America's biggest glamazons.

Khloe Alexandra Kardashian turned 40-years-old on Thursday. It is quite a milestone for the TV star who has done so much in her four decades. The Calabasas, California native has had some incredible accomplishments, from the 'fat sister' next to slender sisters Kim and Kourtney, to a bikini bombshell who lands magazine covers

LOS ANGELES - 1993: (clockwise from top left) Burton Jenner, Khloe Kardashian, Bruce Jenner, Kris Jenner, Kim Kardashian, Brandon Jenner, Brody Jenner, Kourtney Kardashian, Robert Kardashian, Jr. and Cassandra Jenner

She rose to fame starring with her family in the reality television series Keeping Up with the Kardashians from 2007 to 2021.

Then she was in the spin-offs, Kourtney and Khloé Take Miami (2009–2013) and Kourtney and Khloé Take The Hamptons (2014–2015).

Following the ending of their previous show, she and her family began starring on Hulu's The Kardashians in 2022.

In 2009, Kardashian participated in the second season of The Celebrity Apprentice, finishing 10th of 16 candidates by being fired by Donald Trump.

In 2012, she co-hosted the second season of the US adaptation of The X Factor with actor Mario Lopez.

Kardashian is involved in the retail and fashion industries with her sisters Kourtney and Kim.

They have launched several clothing collections and fragrances, and additionally released the book Kardashian Konfidential in 2010.

She came to fame on Keeping Up With The Kardashians, with her sisters

Keeping Up with the Kardashians aired from 2007 to 2021. Seen left fighting with Kim, right

Seen here in her early years with her brother Rob Kardashian

The Dash boutique employees starred in their own short-lived reality television series, Dash Dolls (2015).

In 2016, Kardashian hosted her own talk show, Kocktails with Khloé.

She starred and produced health and fitness docu-series Revenge Body with Khloé Kardashian.

Her love life has been headline making.

Then she was in the spin-offs, Kourtney and Khloé Take Miami (2009–2013) and Kourtney and Khloé Take The Hamptons (2014–2015)

Khloe with Kris Jenner, Kendall Jenner, Kourtney Kardashian, Kim Kardashian West, North West, Caitlyn Jenner and Kylie Jenner attend Kanye West Yeezy Season 3 at Madison Square Garden in 2016

Revenge Body with Khloe Kardashian and her mom Kris in 2019

She also hosted Kocktails With Khloe; here Tori Spelling is a guest

Now Khloe is on The Kardashians on Hulu

Her loves include Lamar Odom, left in 2012, and Tristan Thompson, right in 2021

From September 2009 to December 2016, Kardashian was married to basketball player Lamar Odom, whom she married one month after they first met.

They starred in their own reality television series, Khloé & Lamar (2011–2012).

She also shares Tatum, who turns two on July 28, and True, six, with her 33-year-old ex partner, basketball star Tristan Thompson.

She has also dated rappers The Game and French Montana.

These days she also models a ton for companies like Kate Hudson's Fabletics and has recently partnered with Body Glove for her brand Good American.

These days she also models a ton for companies like Kate Hudson's Fabletics and has recently partnered with Body Glove for her brand Good American

On her reality TV show on Wednesday; here she is seen with Tatum on her lap, Rob's daughter Dream on her left and her own daughter True on the right

The reality TV diva got a warm tribute from her mother Kris Jenner first thing in the morning on her 40th birthday.

The producer's Instagram post noted that the Good American designer is a great mother and is a wonderful daughter.

The blonde beauty shares Tatum, who turns two on July 28, and True, six, with her 33-year-old ex partner, basketball star Tristan Thompson.

'Happy birthday to my beautiful, delicious angel @khloekardashian!!!!!!' began the momager.

'I am not sure what I did to deserve you, but I thank God every single day for the beautiful blessing of being your mommy… you are one of the most wonderful loves of my life, and I cherish each and every glorious memory we have ever made.'

'You are the most amazing daughter and have been the greatest gift in life, but watching you as a mommy has been so remarkable for me,' added Kris.

'You are everyone’s favorite auntie and literally have dedicated and devoted yourself to your babies and to all of your nieces and nephews and are everyone’s hero.

'You are such a joyful, happy, funny slice of life and when I’m with you, you always make me feel so special and so happy to be around you. I love the way you love me.

'You are someone so truly special and have the most amazing creativity, style, energy, beauty and love that exudes from you. You are everyone’s biggest cheerleader and you are so supportive of all of your siblings and all of your nieces and nephews, and you make every single one of us feel so special and loved,' remarked the girlfriend of Corey Gamble.

'I don’t know how I got so lucky to be able to go through life with you!!!! Thank you for all you do for everyone Khloé and for always looking at the glass half full and for always looking at life through such a positive lens.

'No matter what you’re so upbeat for the rest of us. I love your strength and your sensitivity and your vulnerability and your support. Happy birthday, my beautiful girl and may all of your dreams come true. I love you beyond measure, more than I can ever explain in words, and you will always be my Bunny love, Mommy.'