1/14
Instagram
Mariah Carey, Blake Lively and Ryan Reynolds
The Dem Babies and Deadpool collab we never knew we needed!
2/14
Instagram
Demi Lovato
Reader, when we tell you we screamed...
3/14
Instagram/Katy Perry
Katy Perry and Orlando Bloom
Katy: "together our initials are O.K. and that's what it's gonna be"
Us: OK but now we are not OK.
4/14
Instagram/Hilary Duff
Hilary Duff and Adam Lamberg
HEY NOW, HEY NOW: GORDO. IS. BACK.
5/14
Cindy Crawford
You can go shave your back now. Bye all other celeb #TBT attempts!
6/14
Instagram/Amy Schumer
Amy Schumer, Jennifer Lawrence and Phoebe Waller-Bridge
The new holy trinity. (Sorry to this man.)
7/14
Instagram/Candace Cameron Bure
Candace Cameron Bure
Full Stoop, Fuller House, Fullest Hearts.
8/14
Instagram
Zooey Deschanel and Jonathan Scott
How adorkable.
9/14
Instagram/Natalie Portman
Natalie Portman
Say hello to the newest and adorable member of the Millepied-Portman clan!
10/14
Instagram/Reese Witherspoon
Reese Witherspoon
OK wait, so you're saying Reese isn't legally blonde?
11/14
Instagram/Justin Bieber
Justin Bieber
Or should we say Jason Bieber now?
12/14
Instagram/Gwen Stefani
Blake Shelton and Gwen Stefani
Work hard, play hard.
13/14
Instagram/Zoey Deutch
Zoey Deutch
Functional fashion.
14/14
Instagram/Meghan Trainor
Meghan Trainor
What's even the point of having your wisdom teeth removed if you don't get hilarious content out of it?