The Keeping Up With The Kardashians is currently going through a difficult split from Penelope's father Scott Disick, but this week her attention was firmly on little Penelope as she celebrated her third birthday.
Kourtney shared pictures to Instagram showing her birthday day out at Disneyland alongside several very sweet, heartfelt captions.
She wrote: "Happy birthday to the sweetest little girl in the world. Watching your every little move everyday brings me immeasurable happiness. You forever changed my life and my heart and teach me so much everyday."
Kourtney and Penelope wore matching Tinkerbell costuems for their day at Disney, where Kim Kardashian and daughter North joined them.
"VP goes to@kimkardashian for hanging with my crazy Disney obsessed self for 12 hours of major madness," joked Kourtney.
The 36-year-old has made no public comment on reports she has dumped boyfriend of nine years Scott.
It's been widely speculated that the final straw for Kourtney was seeing photos of Scott, 32, getting close to another woman while on holiday in Monte Carlo. Koutrney and their kids were in LA at the time.
As well as Penelope, they are parents to son Mason, five, and baby Reign, seven months.
Scott missed Penelope's birthday as he was reportedly in Miami but he shared a sad comment on Instagram, saying: "One of the only things I'm proud of about myself. Happy birthday P."
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