BRITNEY IS POISED TO DEBUT BIG AT #1!

Industry insiders now predict that Britney Spears' Circus is on track to sell 450,000+ copies AND will be next week's #1 album.

Experts had previously though that Brit would only sell about 350,000 in the first week.

Way to prove them wrong, Miz Spears!

This is a HUGE victory for Britney, especially considering the fact that her last album, Blackout, only sold 290,000 copies its debut week.

A true, heartfelt congratulations to Spears and her team!!