Justin Bieber and Selena Gomez Make Billboard's Top 10 "Most Powerful Couples" List

Billboard has announced its Top 10 picks for "Most Powerful Celebrity Couples," and the young pop star mega-duo Justin Bieber and Selena Gomez come in at no. 8.

Not too shabby for the 18-year-old "Believe" star and his 20-year-old sweetheart. They join among the ranks of such power couples including Jay Z and Beyoncé, Gwen Stefani and Gavin Rossdale, and Mariah Carey and Nick Cannon.

The Biebs and Gomez have been dating for the past 18 months, and combined they have sold over 11.2 million albums worldwide. Not so bad for a couple whose combined age doesn't even reach 40, huh?

Check out the full list of Billboard's Top 10 "Most Powerful Celebrity Couples":

10. SKRILLEX & ELLIE GOULDING

9. BLAKE SHELTON & MIRANDA LAMBERT

8. JUSTIN BIEBER & SELENA GOMEZ

7. ALICIA KEYS & SWIZZ BEATZ

6. GWEN STEFANI & GAVIN ROSSDALE

5. CHAD KROEGER & AVRIL LAVIGNE (who just recently got engaged)

4. MARIAH CAREY & NICK CANNON

3. TIM McGRAW & FAITH HILL

2. JAY-Z & BEYONCE

1. GARTH BROOKS & TRISHA YEARWOOD