It’s the moment that Beyoncé fans in the U.S. have been waiting for. The singer recently announced the official dates for the North American leg of her 2009 “I AM…” World Tour and tickets go on sale to the general public beginning Monday, April 20. New York City’s Madison Spring Garden will kick off the beginning of the tour on Sunday, June 21 and four shows in Las Vegas will mark its finale in August. As an added bonus, it won’t take an arm and leg for fans to score a spot at the long-awaited show. Beyoncé has taken heed to the current economic state and is rewarding concertgoers with affordable tickets. Two thousand seats at each venue will be available for purchase starting at $20. While on tour, Beyoncé will take time to participate in charity events, including national food drive campaign Show Your Helping Hand. -PS