Above: Britney Spears, Nicki Minaj and Jessie and the Toy Boys are performing on the Femme Fatale tour. Pop princess Britney Spears and hip hop diva Nicki Minaj are joining forces this summer for an all-female tour that will whisk them to Hartford&amp;#8217;s XL Center On Aug. 9. Tickets go on sale Monday, June 27 [...]