#TBT: 24 Best Celebrity Throwbacks

Never heard of #ThrowbackThursday? To put it simply, it's an excuse to relive some of your favorite memories...and, of course, share them for all the internet to see!

Everyone from Jessica Alba to Mario Lopez to Naya Rivera have celebrated #tbt with hilarious childhood pictures. Check out the 25 best celebrity throwbacks: 

1. #TBT: Nicole Richie

Nicole Richie:

Did you know Nicole Richie was an aspiring violinist? She posted this adorable picture with the caption: “Dreams DO come true. Well, this one didn’t, but a lot of them do.”

2. #TBT: Gisele Bundchen

Gisele: 

How unfair is this? Even as a child, Gisele was drop-dead gorgeous.

3. #TBT: Selena Gomez

Selena Gomez: 

Selena is all smiles next to her friend,  who happens to be sporting a Barney shirt! Coincidentally, Selena’s first job was a role on Barney and Friends. “No matter who you are, where you are from and what you want to do with you life,” Selena wrote, “Please never give up. I love you all for believing in me.”

4. #TBT: Wilmer Valderrama

Wilmer Valderrama: 

Wilmer Valderrama posted this picture of him and his familia in Venezuela in 1988. The cutie was just eight-years-old! (Plus, how stunning is his mamá?!)

5. #TBT: Jessica Alba

Jessica Alba: 

Hilarious! Jessica Alba posted this picture of her goofing off with her primos during a camping trip. 

6. #TBT: Adriana Lima

Adriana Lima: 

Wow, remember this impressive Victoria’s Secret lineup? The Brazilian beauty posted this picture of her with Heidi Klum on the VS yacht.

7. #TBT: Gina Rodriguez

Gina Rodriguez:

Actress Gina Rodriguez posted this adorable picture of her and her papá! We just want to squeeze those chubby cheeks!

8. #TBT: Mario Lopez

Mario Lopez: 

Before he was a famous actor and heartthrob, Mario Lopez was a kid champion...in wrestling! Even at six-years-old, Lopez already had the beginnings of a serious set of guns. 

9. #TBT: Fergie

Fergie: 

That gorgeous blonde is none other than Black Eyed Peas frontwoman, Fergie!

10. #TBT: Michelle Rodriguez

Michelle Rodriguez

Believe it or not, that little girl clutching her doll is Fast and Furious star Michelle Rodriguez! 

11. #TBT: Paulina Rubio

Paulina Rubio: 

The American Idol judge posted this picture with the incredibly appropriate caption: “Recordando los años dorados.” The golden years, indeed...

12. #TBT: Alessandra Ambrosio

Alessandra Ambrosio:

Seriously? Alessandra Ambrosio has always been drop-dead beautiful...even as a baby-faced teen!

13. #TBT: Adrienne Bailon

Adrienne Bailon: 

Adrienne Bailon, along with her sister and a friend, look chic and stunning in these incredible flapper costumes!

14. #TBT: Naya Rivera

Naya Rivera: 

Oh, man, that oversized sweatshirt. We’re having serous 90s flashbacks over here...

15. #TBT: Enrique Iglesias

Enrique Iglesias: 

And the winner for cutest kid EVER goes to...

16. #TBT: Pitbull

Pitbull: 

Woah! We hardly recognized the cubano without his sunglasses on!

17. #TBT: Becky G

Becky G: 

Becky G posted this picture with the hilarious caption: “#tbt to my Dora the explorer days. Haha” 

18. #TBT: Tyler Posey

Tyler Posey: 

Teen Wolf star Tyler Posey posted these pictures of him, his father, and his brother. Wow, that’s one attractive family

19. #TBT: Sara Paxton

Sara Paxton:

We can’t get over how cute Sara Paxton was as a child! She posted this picture of her dressed up as a kitty-cat with the caption: “Later that day, I redrew this with sharpie.” 

20. #TBT: Alexa Vega

Alexa Vega: 

Long before Machete Kills, Alexa Vega and Robert Rodriguez collaborated on the Spy Kids trilogy! 

21. #TBT: Francia Raisa

Francia Raisa

Actress Francia Raisa and her sister, Italia, pose with these playful leis on a Hawaiian vacation. 

22. #TBT: Christian Serratos

Christian Serratos:

Que preciosa! Christian Serratos clutches her abuela in this adorable throwback.

23. #TBT: Victoria Justice

Victoria Justice: 

“#ThrowbackThursday Eatin’ ice cream like a boss in ’96,” Victoria Justice posted on Instagram.

24. #TBT: Cierra Ramirez

Cierra Ramirez: 

How 90s is that outfit? The Fosters star Cierra Ramirez poses for the camera in this adorable throwback.