Happy 8th Birthday, Twitter: Stars First Tweets Show How Far We've Come >>Hollywood

It's impossible to believe, but we once lived in a world without Twitter. Eight years ago, that is.

The social media service celebrates a birthday today, and a look at various celebrities' first-ever Tweets prove how far we've come.

Miley Cyrus isn't topless. Justin Bieber isn't telling his fans how no one can break their spirit. And Oprah Winfrey? Okay, she's still pretty charming and classy.

But in honor of Twitter turning the calendar on another year of life, we flash back below to 2006 and relive the initial online messages sent by Cyrus, Bieber, Lady Gaga and many other superstars.

It seems like only yesterday, right? Okay, maybe not...

Celebrities Use Twitter for the First Time

1. Ellen's First Tweet

This is Ellen's first-ever Tweet. And, yes, it's called a Tweet.

View As List

1. Ellen's First Tweet

This is Ellen's first-ever Tweet. And, yes, it's called a Tweet.

---

2. Taylor Swift's First Tweet

Taylor Swift's first Tweet? It was actually a RE Tweet of something Justin Bieber said.

---

3. Lady Gaga's First Tweet

This is how it all started for Lady Gaga. She now is one of the most followed celebrities around.

---

4. Miley's First Tweet

The first Miley Cyrus Tweet did not involve a topless photo or any crotch grabbing. AMAZING!

---

5. Britney's First Tweet

Britney Spears kicked off her Twitter career in very official, professional fashion.

---

6. Obama's First Tweet

Barack Obama's first Tweet was very funny. But it was very important.

---

7. JT's First Tweet

Justin Timberlake used Twitter for the first time to promote another artist.

---

8. Justin Bieber's First Tweet

This is how Justin Bieber introduced himself to the world of Twitter.

---

9. Selena's First Tweet

Selena Gomez used Twitter for the first time to promote her own single.

---

10. Demi's First Tweet

Yes, when Twitter first came out, Demi Lovato was still in school.

---

11. Katy Perry's First Tweet

Katy Perry just got into Berlin when Twitter debuted eight years ago.

---

12. Kim Kardashian's First Tweet

Kim Kardashian addressed her family's "Team" for her first-ever Tweet.

---

13. Lindsay's First Tweet

Wow. When Twitter debuted, Lindsay Lohan was having sex with Samantha Ronson.

---

14. Cameron Diaz's First Tweet

This is so cool! Look at this new app Cameron Diaz has!

---

15. Oprah's First Tweet