He may be barely 16 years old, but up-and-coming pop and R&B star Justin Bieber is already declaring the world his own. Backed by...

He may be barely 16 years old, but up-and-coming pop and R&B star Justin Bieber is already declaring the world his own. Backed by a dedicated tween fanbase rivaling that of the Jonas Brothers, the young Canadian crooner will launch a lengthy headlining tour of North American arenas.

The massive 43-date My World Tour launches with a June 23 performance at the XL Center in Hartford, CT. After more than two months on the road, Bieber will wrap his summer jaunt on September 4 at the Great Allentown Fair in Allentown, PA. All dates feature support from “Beautiful Girls” reggae-rap singer Sean Kingston.

Despite being a relative newcomer, the one-boy phenom has booked his headlining debut into some of the nation’s biggest venues. Bieber’s itinerary includes performances on June 26 at Summerfest in Milwaukee, WI; July 14 at Rose Garden Arena in Portland, OR; and August 11 at Bridgestone Arena (formerly the Sommet Center) in Nashville, TN.

Arguably, Bieber’s biggest stateside gig comes on August 31 when he takes the stage at Madison Square Garden in New York, NY. The Garden has a concert capacity of roughly 20,000, and booking the famed venue stands as a major achievement for a young performer who hasn’t headlined any major ticketed events in the U.S. before this point.

At this point, the young performer is only slated for a trio of shows in his native Canada. Those events are scheduled for August 21 at Air Canada Centre in Toronto, ON; August 22 at the John Labatt Centre in London, ON; and August 24 at Scotiabank Place in Ottawa, ON.

With a couple exceptions, presales begin in most tour markets on March 18 at 10 a.m. (local) for members of the official “Bieber Fever” fan club. Presales will include sales of special VIP packages, and will be followed by public onsales on March 27.

In most U.S. markets, tickets will be priced within the $20 to $50 range, though larger markets like New York City are priced up to $70.

According to terms outlined on the fan club Web site, some ticketing restrictions will be in place for the various My World Tour ticket packages. The site notes, in part:

All VIP package tickets are will-call only. Will-call tickets may only be picked up the evening of the event. Please note all packages are non-transferable; no will-call name changes will be permitted under any circumstances. The person who purchases the tickets must be the same person who claims the tickets at will-call with a valid identification.

Though he’s fairly untested as a headlining act, Bieber has been known to stir up fan frenzies at smaller appearances across the nation. Most recently, police were forced to shut down a scheduled November 2009 album signing at a Long Island mall because the increasingly aggressive crowd of approximately 3,000 young fans and parents posed a safety and fire hazard.

Bieber detailed the event in a series of posts on his official Twitter account, writing, “They are not allowing me to come into the mall. if you dont leave I and my fans will be arrested as the police just told us… please go home. the police have already arrested one person from my camp. I dont want anyone hurt.”

Before launching the summer-long trek, Bieber will perform a special March 21 set at the Houston Livestock Show and Rodeo in Houston, TX, followed by a March 23-24 stand at Rosemont Theatre in Rosemont, IL.

Justin Bieber itinerary:
(Dates are subject to change.)

June 23Hartford, CTXL Center
June 24Trenton, NJSun National Bank Center
June 26Cincinnati, OHU.S. Bank Arena
June 27Milwaukee, WISummerfest
June 29Minneapolis, MNTarget Center
June 30Des Moines, IAWells Fargo Arena
July 2Moline, ILi wireless Center
July 3Omaha, NEQwest Center Omaha
July 5Grand Prairie, TXNokia Theatre at Grand Prairie
July 6Tulsa, OKBOK Center
July 8Broomfield, CO1st Bank Center
July 10West Valley City, UTThe E Center
July 13Everett, WAComcast Arena at Everett
July 14Portland, ORRose Garden Arena
July 17Oakland, CAOracle Arena
July 18Reno, NVReno Events Center
July 20Los Angeles, CANokia Theatre L.A. LIVE
July 21Paso Robles, CACalifornia Mid State Fair
July 24Las Vegas, NVPlanet Hollywood Theatre for the Performing Arts
July 25Glendale, AZJobing.com Arena
July 28Kansas City, MOSprint Center
July 29North Little Rock, ARVerizon Arena
July 31Memphis, TNFedExForum
August 1Lafayette, LACajundome
August 4Orlando, FLAmway Arena
August 5Sunrise, FLBankAtlantic Center
August 8Charlotte, NCTime Warner Cable Arena
August 9Duluth, GAThe Arena at Gwinnett Center
August 11Nashville, TNBridgestone Arena
August 12Indianapolis, INConseco Fieldhouse
August 14Columbus, OHSchottenstein Center
August 15Auburn Hills, MIThe Palace of Auburn Hills
August 21Toronto, ONAir Canada Centre
August 22London, ONThe John Labatt Centre
August 24Ottawa, ONScotiabank Place
August 25Albany, NYTimes Union Center
August 27Providence, RIDunkin’ Donuts Center
August 28Newark, NJPrudential Center
August 29Syracuse, NYNew York State Fair
August 31New York, NYMadison Square Garden Arena
September 1Manchester, NHVerizon Wireless Arena
September 3Essex Junction, VTChamplain Valley Fair
September 4Allentown, PAGreat Allentown Fair