Kim and Kourtney Kardashian’s daughters North and Penelope swim with mermaids!

This is literally the cutest thing we've seen since watching Disney's The Little Mermaid.

The _Keeping Up With the Kardashian_s mums, Kim and Kourtney Kardashian, dressed their daughters up in little mermaid outfits and they are totally adorable.

North West and Penelope Disick even got to swim with a real mermaid. Which is a little bit freaky, but a sweet gesture to their toddlers.

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Wife of Kanye West, Kim, shared a picture to her 43 million Instagram followers and captioned her shot: "Little mermaids".

The girls showed off their fishy tails; Penelope, 3, wore a pink mermaid costume, while North's was green and both cuties wore matching black tops.

Kourtney, who recently split from Penelope's father Scott Disick, also shared a picture to her Inst-account.

"Last night we swam with a mermaid," she wrote.

The two cousins are clearly quite good chums and will no doubt become BFFs in the future.

Kim and Kourtney, and their sister Khloe Kardashian, are always sharing images of the pair together.

Safe to say, watch out boys in the future, you're going to have to put up with one cousin defending the other.

Kim has also shared lots of photos of her two-year-old with her neice.

In one picture, Kim wrote alongside it: "These wild ladies always help each other when they have boo boo's! #BFF'S #HappyBirthdayP," the 34-year-old captioned an older photo.

Ronaldo and his son: