By Sarah Bull
They are already proud parents to two-year-old son Mason.
And now Kourtney Kardashian and Scott Disick have posed up with their gorgeous daughter Penelope in an adorable family portrait.
In the pictures, Kourtney and Scott are seen cradling their little girl as they introduce her to the world, while little Mason appears more than excited to take part in the shoot.
Picture perfect: Kourtney Kardashian and Scott Disick pose up with newborn daughter Penelope and son Mason in this gorgeous family portrait
Tender loving care: After posing with Mason, Kourtney and Scott took turns posing individual shots with Penelope
The family posed up in bed, wearing all white outfits, before Kourtney and Scott take turns posing for individual shots with their little girl.
Kourtney's mother Kris Jenner also appears in the shoot, smiling for the camera as she stands alongside Kourtney and her second grandchild.
Kourtney gave birth to daughter Penelope Scotland Disick in Los Angeles on July 8th, weighing 7lbs 14oz.
What's so funny? Mason, who turns three in December, appeared to be having a lot of fun throughout the shoot
'I wasn't prepared for how much I love her': Penelope was born on July 8th and weighed 7lbs 14oz
And a month after the birth, Kourtney introduced Penelope to the world on the cover of Us Weekly magazine.
In the accompanying interview, Kourtney said she wasn't ready for how much love she would feel for her daughter.
She said: 'Nothing could prepare me for how hard I fell in love with her!'
And it seems that Mason has already formed a close bond with his little sister, with Scott telling the magazine: 'He wanted to smell her and give her a kiss on the head and touch her nose and touch her ears.'
Mummy and me time: Kourtney, Mason and Penelope all wore matching white outfits and cuddled in bed for another shot
Sleeping beauty: Penelope appeared entirely unaware of the attention on her as she dozed off
But there's one thing that Scott has left to his girlfriend Kourtney when it comes to their little girl - changing her nappies.
He explained: 'My son is almost 3, and I don’t mind changing his diapers. I’m just not comfortable doing it when the baby is that small.
'One wrong move and you could break the child’s bone. At least my son can tell me, "Dad, you’re doing it wrong." With a little baby, it’s scary.'
Giggles: Mason appeared to be entertaining himself as his picture was taken, giggling and laughing
Quick change: Later in the shoot, Kourtney changed into a grey chiffon shirt while Penelope wore a cute patterned dress
Supportive: Kourtney's mother Kris Jenner also posed up with the pair in another frame
However, Kourtney and Scott also have the help and support of their families, including the much-extended Kardashian clan.
Shortly after Penelope's birth, Kourtney's famous siblings took to Twitter to express their love for the new addition to the family.
Kourtney's sister Khloe wrote an entire blog about how perfect Penelope is, gushing: 'I’m an auntie again!!!!!!!!!! As I’m sure you all know, my beautiful big sister gave birth yesterday to the most perfect baby girl you’ve EVER seen — Penelope Scotland Disick!'
Behave! Mason also appeared to be making his parents laugh with his entertaining antics
That's better: Penelope watched her brother dubiously to see if he would mess around again
She added: 'The entire family is literally exploding with joy and have not stopped fawning over our new little girl. And Mason is already loving being a big brother!
'This is just such a special and happy time for my family. Thank you to Kourt and Scott for making such beautiful babies! LOL.'
Kim also took to Twitter, writing: 'Welcome to the world, Penelope Scotland Disick! Kourtney gave birth to a beautiful baby daughter on Sunday and the whole family is so thrilled to finally meet her!
'She is absolutely perfect! I am so excited to be an aunt again and can’t wait to spoil little Penelope. I know Mason is going to be the best big brother in the whole world. Congratulations Kourtney and Scott. Xo'