Photographers caught the one-year-old dozing on her famous mum's shoulder as she was carried through Soho, New York on Sunday (15 June).
Too. Cute. Right?
Little North was dressed in a white sun frock for an afternoon in the Big Apple with her parents. She was also sporting newly-pierced ears.
There's no word yet on how the famous family marked North's first birthday, which fell on 15 June - also Father's Day - but whatever they did, it was enough to send Kanye and North to bed early!
Kim, 33, tweeted a very sweet picture of Kanye and North fast asleep.
She added the caption: "This is what life is about! Our baby girl turned 1 today! We played so hard they passed out while we were watching the game!
"Happy Father's Day to the best daddy in the world! The way you love our daughter and protect her makes me filled with so much love! #BestDayEver #Twins #HappyFathersDay #HappyBirthday."
Also sending birthday messages to North was Kim's mum Kris Jenner, who wrote on Instagram: "Happy 1st Birthday to my beautiful Granddaughter North!!!! You are an angel and I love you so very much!!! #lovebug #pinchthosecheeks."
The Kardashian West family jetted into New York from Tennessee, where reality star Kim had been supporting rapper Kanye during his set at the Bonnaroo Arts and Music Festival on Friday, 13 June.
Prior to that, the newlyweds were relaxing in the Mexican sunshine on what has been deemed their "official" honeymoon.
Kim and Kanye married in Florence, Italy on 24 May, following a week of pre-wedding parties and receptions in Paris. After their nuptials, they jetted to Ireland for a low-key honeymoon, before flying to Prague to attend the wedding of Kanye's stylist.
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Kim's pregnancy in pictures:
Copyright: WENN Judy Eddy