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Kim Kardashiam

Instagram

Kim Kardashian knows how to kick off a birthday.

While the Keeping Up With the Kardashians star shied away from a video post today, Kim couldn't help but to gush over her sister Kylie Jenner, who just turned the big 1-6.

Kim Kardashian, Kylie Jenner

Courtesy of Denise Truscello/WireImage

"Happy Birthday to my baby sis @kyliejenner !!!! Can't believe your 16! I love you so much!," Kim wrote on Instagram Saturday, posting a photo of Kylie and Kendall when they were kids, along with a more recent shot. 

And that wasn't all.

"More bday love for my muse & baby sis @kyliejenner," Kim went on, posting a collage of herself with Kylie through the years. 

While Kylie seemed to be enjoying her birthday, after what appeared to be a celebration that kicked off at midnight.

"16 haaaay," Kylie tweeted, followed by "Love everyone who called and saw me at midnight! Got the best friends & family!"

Happy Birthday!