shares sweet photo of her daughters North and Chicago in ...

Her little girls are growing up! 

And shared a heartwarming photo to Instagram on Sunday morning of her daughters in matching ensembles. 

The 39-year-old reality queen admitted that North picked the outfits for the sweet snap with Chicago after Kim hosted a decadent dinosaur-themed birthday party for her four-year-old son Saint on Saturday.  

Cuties! Kim Kardashian shared a heartwarming photo to Instagram on Sunday morning of her daughters in matching ensembles

Cuties!  shared a heartwarming photo to Instagram on Sunday morning of her daughters in matching ensembles

The little girls were dressed casually cool in distressed denim shorts and bodysuits with makeshift rabbit ears on their heads.

'That time North dressed Chi in matching outfits,' the mother-of-four captioned the family snap. 

Kim took her Instagram followers on a tour of her backyard on Saturday which was transformed into an adventurous dinosaur park complete with fossil digging, treasure hunting and jewelry making. 

Sweetheart: Kim Kardashian was at the helm of party planning once again to create an incredible Jurassic Park themed spread for Sain'ts fourth birthday

Sweetheart:  was at the helm of party planning once again to create an incredible Jurassic Park themed spread for Sain'ts fourth birthday

Saint seemed to be having a blast touring the site while wearing a camouflaged vest with neon yellow pants.  

'Saint's dinosaur party is today,' Kim told her legions of fans online as she showed off the tented arena.

Kim already has a big fan in the pajama sets as little North paraded around in a custom Cozy Collection matching ensemble.

The six-year-old little girl looked forward in a crop top and pants as she joined her siblings to celebrate her brother Saint's party.

Fashion forward: Kim Kardashian already has a big fan in the pajama sets as little North paraded around in a custom Cozy Collection matching ensemble

forward: already has a big fan in the pajama sets as little North paraded around in a custom Cozy Collection matching ensemble

Cutie: The six-year-old little girl looked fashion forward in a crop top and pants as she joined her siblings to celebrate her brother Saint's birthday

Cutie: The six-year-old little girl looked forward in a crop top and pants as she joined her siblings to celebrate her brother Saint's birthday

The latest collection hasn't been released to the public just yet, but North was a

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