Social Scene: Week of August 14

Mariah Carey hangs out with Serena Williams backstage, Nicki Minaj leaves little to the imagination in a sheer bodysuit and Kim Kardashian hangs out with her niece, Dream.

Those were just some of our favorite moments in the world of celebrity Instagrams this week.

SEE ALSO: Kim Kardashian literally sparkles in figure-hugging jumpsuit during 'secret' photo shoot: Watch!

Also on the list? Reese Witherspoon asks us to call her on her "shell phone," Ariana Grande sings an old Spice Girls tune, Kourtney Kardashian blows a kiss to a camel in Egypt and Yara Shahidi promoting her Always #LikeAGirl campaign.

More of our favorite snaps came from birthday boy Joe Jonas, Miley Cyrus and Rita Ora, who donned some pretty epic Paris Hilton sweatpants.

See our favorite celebrity Instagrams of the week:

23 PHOTOS
Social Scene: Week of August 14
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Social Scene: Week of August 14
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With the beautiful @serenawilliams backstage tonight 😘
That's a wrap for today! Thanks for hanging out with me and Always😊! Join our mission and encourage girls to try, fail, learn and Keep Going #LikeAGirl 💙
Even her cry face is pretty! I'm gonna take notes!
Call me on my shell phone... 🐚 #VacationVibes #SummerFun
BIG LOVE and thanks to my friends @henriquegendre @erinparsonsmakeup @brycescarlett @elizabethsulcer @nailsbykiyookada NEW @voguekorea September covers !!! ❤️🌶📀🔒
forever m00d #forgotthebridge #imissagoodharmonicasolo
Dear Lord I love this dress! #gucci
I ❤️ 🏳️‍🌈 !!!!!!! #TeamMiley @nbcthevoice #Malibu
no tongue
💛💛💛💛💛
🎀🦋😉👠🦋😉
Took a drive along the coast today.
squad
Always @parishilton 👩‍❤️‍👩
So proud to share that this Thursday we are launching our first ever @goodamerican GOOD SWEATS!! The sexiest, most comfortable range of sweats EVER, designed to accentuate curves and complement your shape!! Drops on goodamerican.com August 17 at 9am PT in ALL SIZES #GoodSquad #GoodSweats
riddyyyy😇
new things over at @chromeheartsxbella soon ⛑🎒👠
My sweet, cuddly, hilarious Havie Pie turns 6 today! #happybirthday my angel. I love you so much! You sweeten every day with your pure loving heart and contagious laughter. 🌈🦄🎂 I'm so blessed to be your momma.
Helping these zucchinis LIVE THEIR BEST LIFE #NikkiFresh 🥕🍅🥒
Don't be afraid to be sparkle. ✨👸🏼✨
#freckleface the tan is gone :(
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