Happy Birthday, Penelope Disick! See the 5-Year-Old’s Cutest Instagram Moments

P and her little cuz North couldn't look more excited in this sweet 'gram.

Aunt Khloé couldn't help but snap an adorable pic with her nieces and nephews while babysitting.

The toddler and her little brother Reign look so much alike in matching olive green overalls.

Penelope cuddles up to Khloé, who looks almost unrecognizable in a bright pink wig.

The toddler looks too cute in a mermaid costume with an inside-out braid in her hair.

Kourtney shared this fresh-faced snap while cuddled up with her daughter.

Even toddlers need personalized denim! Penelope totally rocked this embroidered jacket and fur slides.

Mom Kourtney rocks her daughter to sleep in matching white PJs.

P gets a sweet kiss on the lips from her famous mom.

The toddler enjoys feeling the wind in her hair while on a boating adventure with her family.

Penelope dressed up like a Power Ranger with her family for a day of trick-or-treating.

P and North walked hand-in-hand wearing matching buns, Pablo tees, and sneakers.

The already-skilled selfie pro leans in to give her mom a kiss on the cheek.

Kourtney and her daughter enjoy some late night snacks in bed.

Penelope dressed up as a Disney princess with her cousin, North West, and a friend in this too-cute snap.

The on-trend cousins wore matching white looks for one fashionable playdate. 

Kourtney Kardashian's only daughter looked longingly at an ice cream sundae in this hilarious photo.

Penelope snuggled with her Aunt Khloé by a Christmas Tree, both clad in onesies.

The tot seriously studied her artwork in this too-cute 'gram.

Penelope joined her cousin North in dressing as a mermaid for North's themed birthday party. She posed with her brother Mason and Aunt Khloé, who rocked a lavender wig.

P and North look happy as clams while walking down the street hand-in-hand.

The toddler joined her mom and little brother Reign for a healthy lunch out.

Penelope enjoyed a magical day with her family at Harry Potter World, even holding a wand of her own.

She looked too-cute in a mermaid tail and starfish top, rocking a French braid in her hair.

Penelope takes a piggyback ride on her famous mom, posing in front of a stunning mural.

Khloé and her young niece wore matching long boxer braids while vacationing in Iceland.

The cousins and best friends rocked matching mermaid tails, black halter tops, and buns.

P and her little brother pose by a neon sign that reads, "Love me," for a cute 'gram.

The famous toddler sips on a juice box while wearing an adorable peach-toned tutu.

Kris Jenner put her granddaughter in a matching lemon outfit, posing for this hilarious pic in her foyer.

Penelope poses with brothers Mason and Reign and cousin North for this too-cute Christmas card in matching black outfits.

P stares at her famous mom as she poses in red, white, and blue for a patriotic snap.

The tot rocks a fur vest, ripped skinnies, and mirrored shades, showing off her style savvy.

The stylish cousins know that a pair of sunglasses can make the outfit.

Penelope and North look too-cute in ballerina-inspired looks, including tutus, leotards, leg warmers, flats, and even tiny buns.