The world's unlikeliest friendships

We all know about Kendall Jenner and Gigi Hadid, not to mention Ben Affleck and Matt Damon.

But since it is International Day of Friendship, let's take a look at some of the most surprising friendships:

Ivanka Trump and Chelsea Clinton
Prior to the election, these two were close friends. These famous daughters were introduced by their husbands.

Tom Brady and Peyton Manning
They may be rivals on the field but are are when they step off it. Between golf games and double dates, they have each others' backs.

Snooki and John McCain
These two first connected online. The reality star and the politician became fast friends after a series of tweets.

Lady Gaga and Julian Assange
These two bonded over a spot of tea back in 2012. The singer visited Assange at the embassy where he was seeking asylum.

Meryl Streep and Hillary Clinton
This power duo has been friends for years. Hillary even said she would want Meryl to play her in a movie.

Bubba Watson and Justin Bieber
Another unlikely duo that became friends. Justin even taught Bubba's son how to play the drums.

Roger Federer and Rafael Nadal
They may battle it out on the court for the No. 1 seed, nut they also have a lot of respect for one another.

Dennis Rodman and Kim Jong-Un
After the infamous trip to North Korea in 2013, Rodman continues to visit. He's gone back six times to see his "friend for life".

RELATED: Check out these furry friends and their bestie:

66 PHOTOS

Pet friendship goals

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Pet friendship goals

I always feel like I should get a prize for getting all four kittens to look at the camera at the same time.

From @livviedix: "The kittens' first adventure outside! ☀️" #catsofinstagram

From @playground_ragdolls: "the kittens have sprouted!" #catsofinstagram

From @christielimb: "Hagrid and Tonks having sweet little dreams, together" #catsofinstagram

From @happycatmutlu: "Morning after watching Harry Potter all night 🌙" #catsofinstagram

chowing down on buddy's birthday dinner a couple nights ago. #nom

why making the bed is nearly impossible for human sometimes. #productivitykiller

blue cheese. #bluebearypie

You think she'll notice? Naw man, it's not like we have opposable thumbs...she'll blame it on the human fur sure. @superhirocat @white_coffee_cat #accountbomb

This is my 2nd entry for the #TobyAndMiloBirthday contest hosted by @toby_littledude + @milomeetsworld and I want to win a prize from @popyourpup ________________________________________ We are trying to imitate @toby_littledude and @milomeetsworld 🐶🐶 its sooo hard when you aren't tiny or fluffy 😁😳😜

yo: let me alone!!!

Sometimes Thunderbolt and Lightning need a quiet place to relax, listen to their CD Walkmans and read their wizardry books. This small hut is the perfect place for them to do just that! Get one for your best friend at: www.urbanpawpet.com Use the code H&S at checkout to receive a nice little discount! A portion of every sale will also be donated to the animal sanctuary, Best Friends Animal Society. @bestfriendsanimalsociety

We hope you are all enjoying National Best Friend Day! These best friends are both up for adoption at Southampton Animal Shelter in NY. "The puppy was the runt of the litter and was placed with the kittens. He now thinks he is a cat." Visit: www.southamptonanimalshelter.com for more information. Photo Credit: @shainafishman Thinking about adding a new best friend to your family? Harlow can help! Follow her new account: @harlowandfriends to find an adoptable shelter pet near you.

Aren't moms just the best? Happy Mothers Day from Chase the Puppy. ❤️ #retriever #goldenretriever #familyportrait #betweentwodogs

Ginny woke up and thought about going outside, and that really tired her out, so now she's snuggling up to Ginny Jr until she has enough energy to think about going outside again. Ginny has such a tough life. (If you would like to cuddle clone your pet with @cuddleclones then you can use the code GINNYJRT for 10% off at www.cuddleclones.com!)

When you and your bestie's outfits are on point. 🙌 #bandanabuddies

"Hey Larry, you going to share that buddy?" 🐢🐶 #larryandcricket ( see tomorrow's photo to see what happens! 💕)

This is my entry for special #pets_friendship by @petscorner (I know it's a repost) but this friendship is quite unusual and yet it's beautiful and it just works! Watermelon races anyone.....🍉 @amazing_picturez @ruckustheeskie @lifeofmill

Happiness is a warm puppy..... Or in this case 2 warm puppies!!! #throwbackthursday to Cricket on the left and his sister in the right! #repost #becauseitstoogoodnottoo ! ❤️❤️

Nothing like a little gossip with a morning up of joe! Snap a pic of your pups with the tag #justsayjoe and @brimcoffee is donating $1 to @americanhumane for every photo! It's a great cause! 💚

Albert & Edgar #ourshipyardliving #edgarandalbert

Making friends on the Mars Farm.

That tongue! Meet April! The @NebraskaBorderCollieRescue is fostering her right now, and she nearly licked my face off. She’s got a ton of love and needs someone to show her just the same. Was a pleasure meeting her and her foster family. Follow the link in their profile (@NebraskaBorderCollieRescue) if you’re looking for a border collie to love!

Flashback Friday: Took my brother @frank_the_funnyfrenchie to Petsmart for the first time. Snack shopping is the best. #shopping #flashback

@dagger and his buddy #dailyhumphrey (@artfuse) took a break on their early-morning power walk to take this photo for YOU. Also it was sunny.

Dagger and Stella // sitting in a tree // K-I-S-S-I-N-G 👄💄💋

Jazzy says "Don't worry Coopie. You are still my favorite doggy in the universe." #Signaturepaws #SiblingLove 👫

Turbie Twist fail 👳🏼👳🏼 #StillHappy #turbietwist @beggin#beggintime#begginpartner#spon

@Superhirocat used camouflage! What will Chibi do? FRAP BARK ▸ DERP ESCAPE

When you're finally reunited with bae ❤️

Snapchat us at em.wng for extra photos and things!

Friends who 🎧 together stay together.

Newest art installation at the @deyoungmuseum 🐺🐺🐺🐺 #CorgiArt #LimitedEngagement #ThisOneIsCalledSTUMPED

おはようございます。暑くて朝散歩の写真はなし。ゴン太君は悠鼓が大好き。Shiba-dog Gonta loves Yuuko. #dogsofinstagram #ゴールデンレトリバー #webstagram #ilovegolden_retrievers #igpetoftheday #petscorner #insta_animal #dog_ofinstagram #insta_dogs #gloriousgoldens #retriever #goldenretriever #犬バカ部 #igdog #doglover #gryuuko #topdogphoto #aplacetolovedogs #catsdogs26 #retrieveroftheday #dogscorner #friendlypets #happy_pet #thedailygolden #dog_features #excellent_dogs #pets_perfection #お口ぷっくりクラブ

Ponzu 🐕 Asia🐒

ブログ更新しました『アジア退院しました！』

Help me, Obi-Winter Kenobi, you're my only hope!

0 F's Given. @muppetsrevenge

Feeling very mislead about Take Your 🐶 to Work Day...#worksucks

Having a great time @socalcorgibeachday @grahamthecorgi #threecorgis #corgi #cute #socalcorgibeachday

Blue steel #threecorgis #corgi #cute #bluesteel

cuddling with my girl @yaletownharlot - tag your favourite spoon 😍

True meaning of #bullspitz (@buttersthefrenchie) ___ #nationalsiblingsday #americaneskimo #eskie #dogscorner #weeklyfluff #communityfirst @instagram #barkbox #BarkBae #fluffypack #petscorner #pawpack #excellent_dogs #dogsandpals #barkpack #bestwoof #petbox #atdogs #petgasm #whpcolorplay #bestwoof #whitedog #bulldog #frenchie #frenchiesofinstagram #squishyfaces #squishyfacecrew

Mama we are ready to travel! @little_penelope_

Caught snugglin! #smoosh #catsofinstagram #pickletoo

Wink dun work if you dun do it to my face 😏

Give these cuties their treats! 🐶@yogis35pug - Tag #puppypalace to be featured! #dogstagram #dogs #dogsofinstagram #dogsofig #pugs #pugsofinstagram #cute #adorableanimals

@manphiromin - Tag #puppypalace to be featured! #dogstagram #dogsofinstagram #cute #adorableanimals #cutepuppy

Tag us with #puppiesforall and follow @DogVacay for a chance to be featured! #dog #love #instadaily #cute #puppy #instagood #puppies #dogs #instadaily

Yogie is on his first Vacay ever and he already made a friend! Have a great time, you guys! (📷: @yogiethedog)

Kiss us, we're Irish! Happy St. Patty's to all! Tag us with #puppiesforall for a chance to be featured! @DogVacay #dog #love #instadaily #cute #puppy #instagood #puppies #dogs #instadaily

Ready (but not happy) for our bath. #earprotector #piggyandpolly

basket dogs♡ not for SALE :)) • 破格の値札が付いておりますが売り物では決してございませんwww • お返事遅れていましてごめんなさい！ • のちほどゆっくりお返事させていただきます♡

they're pinky and the brain yes, pinky and the brain one is a genius, the other's insane 🎶😜🐭 #notreally #butkindof

ゆうがたさんぽ♫ 今日もヤッホーなふたりでした🐶🐶💨💨 #dog#pekingese#chihuahua#dogoftheday#dogofthedayjp#ペキニーズ#チワワ

相変わらず仲良しのふたりです♡o(^・x・^)o #cat #catstagram #猫#ねこ#ネコ

ねこの箱詰め🐱🐱🐱 @nocoto_store の箱かわいい💛

wait for the rain to stop🐶🐶雨やまないかな〜 #teaser #ティーザー

George Washington: Baby, you're a firework... ❤️🔥❤️🔥❤️ Lady Liberty: Um...no... 🙉😡 _______________________________________ Celebrate US & Canada's bdays by posting a pic or video in pants and a hat using the hashtag #HatsAndPantsParty AND by using the code MAYA to get 18% OFF any new @BarkBox subscription! PARTY ON, MOTHERPUPPERS. @BarkBox #4thofjuly

We're not looking until we get bacon.... #outtolunchwiththeparents#foodpark

| besties for life |

Caption this and tag a friend! My favorites will get a spam of likes :) #dwarfhamster #hamster #pocketpet #yorkie #dogsofinstagram #friendlypets #happy_pet #igfluff #theworldofpets #lileslops

These brothers, Wolfie and Hulk, are handsome, playful and ready to find a forever home. Come by last hope animal shelter too meet the gang! #LastHopeAnimalShelter #Wantagh #AdoptDontShop #Brothers #Kittens

@toastmeetsworld, is this how I pose like a pro?

Before and after... Ella likes before more. 💆🏻

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