North and Kanye West snooze together on the eve of her first birthday, and Father's Day Credit: Courtesy Kim Kardashian

Life's tiring when you're one! Kim Kardashian shared an adorable picture via Instagram of daughter North West on her first birthday, passed out in bed with dad Kanye West after playing "so hard."

The reality TV star posted the cute snap on the evening of Sunday, June 15, showing her rapper husband, 37, and one-year-old daughter snoozing in bed. The cute duo had snuggled up for a Father's Day cuddle, to watch the NBA championship game together.

"This is what life is about!" proud mama Kardashian, 33, wrote. "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."

Earlier in the day, Kim's mom Kris Jenner also paid tribute to her granddaughter, celebrating her milestone birthday. The doting grandma, 58, posted a beautiful picture of North and wished her a happy day in the midst of a Father's Day Instagram session.

"Happy 1st Birthday to my beautiful Granddaughter North!!!!" Jenner wrote. "You are an angel and I love you so very much!!! #lovebug #pinchthosecheeks."