New Kids on the Block and the Backstreet Boys are teaming up for a tour - after their duet earlier this year (10) left fans desperate for more.

The former hitmaking boybands thrilled followers at New York City's Radio City Music Hall in June (10) when they sang Backstreet Boys' hit I Want It That Way for the sold-out crowd. And the groups have decided to make the collaboration a semi-permanent arrangement - the two bands are set to tour the U.S. together in 2011, according to E! News.

A source says, "The idea is to recreate the boy band phenomenon. It will be the ultimate ladies' night out." (MJ/WNWE/CL)

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