Kourtney Kardashian babysat for sister Kim, bringing North West along with for daughter Penelope's ballet lessons on Thursday.
Kourtney Kardashian helps steady her adorable niece North West after a ballet class in Southern California on Thursday.
Penelope Disick, Kourtney and Scott Disick's 2-year-old daughter, stares at photographers, sporting an adorable black tutu.
The 36-year-old mother-of-three rallies the troops, carrying her toddler while holding the hand of Hollywood's most famous tot.
Too cute! Kim and Kanye West's precious little girl, who turns 2 next month, kept warm on the drizzly day in a white fleece coat.
The reality TV star, clad in a stylish black Nike exercise suit, was keeping an eye on the tot with her sister out of town.
North's mom Kim on Thursday tweeted that she'd met up with gamers in San Francisco; and was also expected to travel to France for the Cannes Film Festival.
Little North braves the chilly winds while Penelope -- who also celebrates a birthday this summer, turning 3 in July -- clings onto her mommy.
North, whose hair was styled up, gets ready to board Kourtney's high-end car.
The helpful aunt helps the child get comfortable in her carseat while loading up the vehicle.
All in a day's work! The Keeping Up With The Kardashians star adjusts her glasses after the busy afternoon with the kiddies.