I wore this outfit to Kourt’s surprise dinner that the fam threw for her at Taverna Tony in Malibu! Right now I’m loving red lips and braids! I topped off my black and white shift dress with a Margiela fringe vest over. Such a cute way to amp up your look. Xo

Had so much fun celebrating Kourt’s birthday with my fam and close friends! Xo

Happy Birthday Kourt! You have always mentored me even if you never knew it. You’re my big sis and I look up to you so much! I probably harass you now with all of the baby questions I ask you but it’s because you are so good at it. You are such an amazing mom, sister & best friend! I idolize YOU! Xo

Happy Birthday to my best friend! My ride or die @carladibello I love you!!!

I love you and can’t believe you’re 26 years old!!! Time flies! I love you so much!!! Xo

Happy Birthday dad!!! You would have been pretty old today ;)

Happy birthday to be BFF Jonathan! Today I’m thinking back over all the years we’ve know each other and all of the laughs we’ve had! Thank you for coming into my life and making me smile!!!! Xo

Happy birthday Rachel Roy!!! May all your birthday wishes come true!! Xo

My sisters and I would always send little notes to each other and write long messages in birthday cards. This is the card I wrote to Khloe on her 18th birthday.

I asked her in the message to never change, and 10 years later she is still the fun, loving, supportive sister she was then. Love you Khlo! Xo

We all went to Serendipity on our last days of Miami to celebrate Mason’s 3rd birthday party. Thomas the Train was the theme! He is kind of obsessed!

In the pics where Nicole is covered in cake, we were showing Mason what usually happens when you want to sniff the cake! LOL Xo

I can’t believe Mason is turning three today! He has changed my world in so many ways and I am amazed every day by him. He is the world’s greatest big brother to Penelope and the most loving nephew any aunt could ask for.

Happy birthday Mase, love Aunt KiKi Xo

I found this pic of us @mikesnedegar at one of our many fun Vegas nights!#memories #HappyBirthday

Happy birthday to one of my best friends, Loren!! I love you soooo much!! Xo

Happy Birthday @brittgastineau I love you sooooo much!!!!

Lamar – thanks for being the most incredible husband to my sister and an amazing brother to us all. So proud to call you family! Happy birthday, I love you so much! Xo

So many birthdays this week! Today is one of my best friend Simon‘s birthday!! Happy birthday Simon!! I hope you have the most amazing day today. Love you!

Leave your birthday messages for Simon in the comments. Xo

Happy birthday to my mom, momager and best friend! I love you more than you know and am thankful for you every single day. I am blessed to have a mother like you who loves and supports unconditionally. Happy birthday, mom! Xo

Happy birthday to my gorgeous baby sister, Kendall! I love you soooooo much!!! I can’t believe you are 17! Xo

This year I’m celebrating my birthday with a big Halloween party at LIV in Miami!! Wait until you see my costume! I’m SO excited. Halloween is one of my favorite holidays… I love getting dressed up and seeing everyone’s costumes! Xo

I love you sooo much!!!

I just want to say thank you so much for all the sweet birthday messages you guys have been leaving today on my blog, Twitter and Facebook!! I am so blessed to have friends, family and fans who support me every day. I’m feeling very loved. Thank you all!! Xo

I got whisked away to Rome for a birthday week surprise!

I’m wearing a green Lanvin dress and Tom Ford heels and accessories. I love this dress! I’m really loving this deep emerald green color at the moment, what do you think? Xo

This year I’m celebrating my birthday with a big Halloween party at LIV in Miami!! Wait until you see my costume! I’m SO excited. Halloween is one of my favorite holidays… I love getting dressed up and seeing everyone’s costumes! Have you got yours yet? Xo

Happy birthday to one of my idols and style icons, Sophia Loren.

Sophia has been and always will be the epitome of glamour and grace… classically beautiful and glamorous and forever an icon. Xo

Happy 15th birthday to my stunning, silly, smart, talented, funny little sister, Kylie! I love you more than you know!!

You are growing up waaayyy too fast for my liking, but what an amazing and beautiful young lady you have turned into. We are all so proud of you and I can’t wait to see what the future has in store. Happy birthday, Kylie. I love you!!!

Leave your birthday messages for Kylie in the comments! Xo

Happy Birthday @joycebonelli I love you soooo much!!!!

I love it that all my besties have bdays today!!!!! Happy birthday @larsapippen! I love you soooo much! And happy birthday @robinantinpcd! I miss you and love you soooo much!!!!

Anyone else have a birthday today??? Xo

Happy birthday Khloball!!! I love you more than you know! I am so proud of the woman and wife you have become.

Leave your birthday messages for Khloe in the comments!!! Xo

Happy birthday to my big sister, Kourtney! I can’t believe another year has passed!

I have always looked up to you, you are my idol! Thank you for teaching me so much growing up and letting me copy you all the time! LOL

Leave your birthday messages for Kourt in the comments! Xo

Happy birthday to my little brother Rob!!! I love you more than you know! You’ve grown into an amazing young man and I’m proud to call you my brother. I hope your 25th year is the best yet!! Love you so much! Xo

Leave your birthday messages for Rob in the comments.

Happy Birthday Duchess Kate, and welcome to the thirties club!

ShoeDazzle has created this gorgeous shoe in Kate’s honor called The Duchess! I personally love Kate’s classic style and this shoe has gorgeous, classic quilting and a really graceful silhouette. This shoe would make any girl feel like a princess!

Watch the video to see my birthday wishes to Kate here! Xo

Happy birthday to the joy of my world, Mason!! Looking through all of these pics makes me so happy! So many memories, and so many more to come! I can’t believe how fast Mason is growing up. He’s a real little man now!

Happy Birthday Mason!!! I love you more than you know! Xo

Happy birthday to the beautiful Miss Britney Spears! Welcome to the 30′s club, Brit!! I wish you all the best for this next year and beyond. You’re going to love your 30′s! I love you and hope you have a magical day. Xo

Happy birthday to my big brother Lamar. You always have my back and I love you so much! I hope you have an amazing birthday. xo

Happy birthday Mom! Thank you for being an amazing mother and my best friend and for standing by me through everything.

You have always been there for us no matter what and I am so grateful every day for the lessons you have taught us and the unconditional love you have given us.

I love you so much!

I can’t believe my baby sister is 16 today! Kendall, you promised me you would never grow up, and yet here you are, towering over us all!!!

I love you so much and am so proud of everything you have achieved. I know one day I’ll see you on the cover of Vogue! I’m sad I can’t be there to celebrate with you but as soon as I get back we’ll celebrate together… and you can drive us there!!! Happy sweet sixteen, Kendall.

Happy birthday to the rock of our family, Bruce!

I remember last year we went out for dinner and we all went around the table and shared our favorite memories about Bruce, and mine was from my 11th birthday, when Bruce brought Burt, Casey, Brandon and Brody to meet me, Khloe, Kourtney and Rob for the first time. Well this year I think you gave me a new favorite memory… you were there for me to walk me down the aisle on my most special day and I’ll never forget that. Bruce, as every year goes by you give me 1000 more memories like these. I love you so much and hope you have an amazing day today! xo

I had such a fun time in Las Vegas last weekend celebrating my birthday at Marquee with my close friends and family. Kris, my mom, Khloe and Lamar all flew out to celebrate and we partied the night away at Marquee in the Cosmopolitan Hotel.

I chose this white Alaia dress for my special night! Do you guys like it? Simple but sexy!

Thanks to everyone who made my birthday so special! And thank you guys for your sweet birthday messages.

Photos: Denise Truscello

Hi dolls! I’ve teamed up with Auction Cause and am auctioning off a VIP pass to my birthday party at Marquee in Las Vegas on October 22 to benefit Dream Foundation.

The highest bidder, and their guest, will get to skip the line at Marquee and be escorted in to the VIP room where we’ll take some fun photos together!

A portion of the proceeds will go to Dream Foundation an amazing charity that my whole family supports that grants wishes to terminally ill adults.

You can bid here!

Hi dolls! I’ll be celebrating my birthday at Marquee nightclub at The Cosmopolitan in Las Vegas on October 22!! So excited! I always have so much fun in Vegas!

My dad used to love taking home videos of me, Kourt, Khloe and Rob when we were kids! I just found a bunch of old home movies and will be posting them over the next few weeks.

This one is of me on my fourth birthday dressed up as Minnie Mouse!! LOL Can you hear the song in the background!? Ghostbusters!!!

Watch the video here!!

My gorgeous little sister Kylie turns 14 today!!!!! I can’t believe how fast she is growing up. Both she and Kendall tower over me now, it’s ridiculous, lol. I’m a very proud big (but shorter, lol) sister!

Kylie, I love you SO much and I hope you have the best day ever!

Leave your birthday wishes for Kylie in the comments,

Happy birthday to my brother Rob!! I love you so much, and am so proud of you. I hope this day is an amazing one and I know this next year has so much in store for you.

Leave your birthday messages for Rob in the comments and I’ll make sure he reads them!

Did you guys see this on the show last week? On my birthday Kourtney made me try a keg stand! Ummm gross and I don’t see the point! LOL! But of course, I had to accept the challenge and do it anyway.

After my birthday episode of Kourtney and Kim Take New York last night, I was looking back through all my photos and came across these pics from my NYC birthday celebration last year!

I can’t believe four months has passed since my birthday. Time really does fly.

On my birthday Joyce took pics of all of us with these stars. We were all just having fun and playing around.

Shoot for the moon… the worst that can happen is you will end up amongst the stars!

The night before my big birthday bash at Tao in Las Vegas I went to dinner at Lavo and all my best friends came Cici, Sheiva, Carla, Joyce and of course Khloe, Kourt and mom.

I want to thank you all for your lovely birthday wishes!!!

One of my fan sites Kim K Web set up a section on their site a few weeks ago and so many of you submitted birthday messages!!!! I am sooooo grateful and reading through all of your sweet messages made me so happy.

You guys are amazing! I love each and every one of you! xoxo

Spikes! LOL

I got my first birthday gift a few weeks ago and it was from Jonathan and Simon. They are so sweet, and surprised me with this gorgeous Christian Louboutin spike clutch! I didn’t hurt myself on this gift though!!

I swear I have been celebrating my birthday all month long now! It’s been fun!