Justin Bieber 'Hyped' For Upcoming World Tour

Star can't wait to hit stages around the world

Justin Bieber has spoken of his excitement ahead of his Believe world tour.

The global jaunt kicks off in Glendale on September 29, and will include a staggering 85 shows overall - 50 in North America between September 29 and January 27, and a further 35 from February 17 to April 27 in European territories including the United Kingdom and Ireland.

Writing on Twitter, Biebs wrote: "getting off #AGT stage and i just gotta say...people are not ready for this tour! #BELIEVEtour is gonna make people BELIEVE! hyped!"

Justin has a ridiculously busy schedule at the moment; rehearsing for the shows as well as readying his new video 'Beauty And A Beat' and performing for America's Got Talent.

His new book Just Getting Started is also released this week. Earlier today he wrote in reference to the false paternity claims by Mariah Yeater last year: "got a lot to say in there. even about YEATER. lol (sic)"

He scored his first UK Number 1 earlier this year when album Believe beat Cheryl Cole's A Million Lights to the top spot.