North West and Penelope Disick are already two of Hollywood's most popular sidekicks—and they aren't even in the 2nd grade yet! Check out some of their most cutest moments together.
Kim Kardashian shared this adorable photo of North reaching out to her older cousin as the two headed to bed.
Do you want to build a snowman? North and Penelope dressed up as Elsa and Anna from Frozen for Halloween.
Penelope looked a lot less frightened than North did while they were "road trippin'" alongside Kim, Khloe, and Mason.
Check out these little mermaids!
- Penelope Disick Awkwardly Stands Next to Mom Kourtney Kardashian and Travis Barker Making Out Backstage: Watch
- Kourtney Kardashian Fans Beg to See 3-Month-Old Son Rocky as She Shows Off His Stroller Backstage at Blink-182 Concert
- Kim Kardashian's Niece Penelope Disick Wears Taylor Swift Shirt Despite Reality Star's Ongoing Feud With the Singer: Photo
North and Penelope love their ballerina outfits! The two besties rocked their dance gear on Penelope's birthday.
BFF goals. How cute does North look holding P?
Real friends get injured together and smile about it!
Kim shouted P out for her birthday in the sweet throwback picture, saying in part, "tbt thanks for being the best big cousin North always looks up to!"
The two youngsters checked out a winter wonderland together.
Friends that dress up together, stay together! Kim captioned this cute pic, "bubbles and Minnie mouse kinda day!"