Despite being the CEO to a billion dollar business, a new mom and a reality star, she recently vowed to her mom Kris Jenner that she would spend some more time with her grandmother MJ.

And Kylie Jenner did just that on Thursday, appearing with elder sister Khloe to spend the afternoon with Mary Joe at her office.

The 21-year-old rocked a cropped tee and jeans as she posed for the camera for the fun-filled girl's day out.  

Kylie then progressed to make up a little tune to about how much she loved her sister and grandma.

'The two loves of my life,' she sung, repeating the words.

While Kylie and Khloe stole the limelight, MJ stood quietly in the background smiling at her granddaughters.

She was dressed in a striped shirt and styled her brunette hair straight into her signature bob.

Earlier in the day, the mom to Stormi Webster showcased her stellar ensemble for her fans.

Kylie opted for a brown coloured crop top and a pair of figure-hugging denim jeans.

While her stomach was on full display, she styled her dark long tresses out and donned a full face of makeup.

Khloe was also all glammed up in a neutral coloured shirt and her blonde hair out.

Back in an April episode of their show Keeping Up With The Kardashians, Kylie and her sister Kendall Jenner, 23, vowed to their mom Kris that they would step up when it came to spending time with MJ.

'I just wanted to call you and tell you that Kylie and I took my mom so she could relax and that if you need anything, you can text me and Kylie,' Kendall said on the phone to MJ during a lunch date.

And the pure shock and joy on Kris' face during the call said it all.

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