She even got serenaded by her little girl.
Baby girl Stormi stole the show in a clip her mom shared on Instagram. The little one sang along to the "Happy Birthday" song with her mom, and it is the most precious and pure thing you'll see all day! Trust us.
The rest of the population might have number balloons, but Kylie is different.
The birthday decoration for a billionaire is nothing compared to average folks' decor. Kylie posed in a stunning pink-feathered dress in front of a huge flower arrangement designed to look like the number 22.
Kylie was dressed in all white while she was a tourist in Italy.
She wore a gorgeous shirt dress with simple but pricey accessories that made her look so chic and rich. Kylie's getaway looked like a dream come true, and the views that she posed in front of were breathtaking.
She looked so stylish on her day.
Kylie kept it super fashion forward on her big day. The theme seemed to be yellow and pink, and she really rocked the heck out of this outfit.
She also rocked a gorgeous white feather dress for her birthday dinner.
This dress caused quite the controversy because it was reported to be a possible wedding dress. It turned out Kylie was just wanting to look like a billion bucks, and she did in this gown.
Her beau Travis gave her an outrageous gift.
The Kylie Lip Kit founder received a stunning diamond necklace with her company's logo covered in tiny jewels. He really does know how to spoil his girl. For her 21st birthday, he got her a gorgeous vintage Rolls-Royce.
She really lived it up on this yacht.
Her body looked incredible in this pic she shared after the relaxing weekend she had on the super-yacht. She really works hard for her money, so she deserves a celebration this large.